Identiﬁcation of Industrial Heritage and a Theoretical Framework for an Industrial Heritage Inventory System in Pakistan

: Heritage studies and historical preservation in Pakistan, which have gained momentum in the past few decades, have been focused primarily on residential, commercial, and religious architecture dating to the British and Mughal eras, leaving aside an important layer of economic and urban history related to the industrialization of major cities. Most industrial buildings are left to decay or are demolished to make space for new development. Based on a literature review of Pakistan’s industrial heritage and site surveys conducted in Pakistan between 2019 and 2021, several industrial facilities were identiﬁed that have social, cultural, and economic potential for reuse or retooling to address the problem of inadequate public amenities in urban areas. There is, however, no documentation regarding such sites that is available for use by potential stakeholders. An inventory system is proposed to establish an overview of the industrial heritage in Pakistan (types of sites, current properties, spatial characteristics, signiﬁcance) and to facilitate the recognition and management of these sites. An “industrial site inventory record” (ISIR) form is proposed to record information about industrial buildings and sites. In addition, an “industrial site statement of signiﬁcance” (ISSOS) is proposed for use in recording the description, heritage value, and important architectural elements of signiﬁcant industrial buildings and sites. The proposed inventory system is a step toward the recognition of industrial heritage and its potential for adaptive reuse and contribution to urban regeneration.


Introduction
Although industrial sites are recognized around the world as cultural heritage assets (the Nizhny Tagil Charter for Industrial Heritage, July 2003; the Dublin Joint ICOMOS-TICCIH Principles for the Conservation of Industrial Heritage Sites, Structures, Areas and Landscapes, 2011; and the Taipei Declaration for Asian Industrial Heritage, 2012) and their important role in sustainable urban regeneration [1], they are not yet recognized as potential heritage sites in Pakistan. Work has been conducted on heritage sites by organizations such as the National Heritage and Culture (NH&C) division of the Government of Pakistan, the Heritage Foundation of Pakistan, and the Heritage Cell, a research unit of the Department of Architecture and Planning of Nadirshaw Eduljee Dinshaw University of Engineering and technology (HC-DAPNED) in Karachi, Pakistan. The heritage laws and conservation work conducted to date have been related primarily to archaeological sites, such as the remains of the Indus Valley civilization and the Gandharan civilization in Pakistan. In addition to these sites, residential, commercial, religious, and institutional buildings from the Mughal and British eras have been the focus of attention. However, the term "industrial heritage" is still new in the context of Pakistan's heritage [2].
The industrialization and industrial heritage of Pakistan are related to the country's colonial past. The industrial revolution in Pakistan and the major industrial sites and infrastructure of heritage value, such as seaports and railway infrastructure, can be connected to the British rule of the Indian subcontinent (see Figure 1). Figure 1 shows a timeline of industrialization in the West and the events on the Indian subcontinent. After the Industrial Revolution, abandoned sites of heritage value in the West were preserved and reintegrated into urban planning, mainly through the concept of adaptive reuse. The 2003 Nizhny Tagil charter, the 2011 Dublin principles for industrial heritage, and organizations such as the International Committee for the Conservation of Industrial Heritage (TICCIH) are working to preserve industrial heritage.
Unlike industrial sites in the Western world, industrial sites in Pakistan are not recognized as heritage sites and are usually ignored by the authorities. They are not currently considered to be potential sites for future city redevelopment, and the political instruments to offer new programs for such sites are limited. The industrial culture of Pakistan has evolved since the country's creation in 1947. There are three main types of industries: state-led industries, private industries, and public-private partnerships. The industrial culture in Pakistan can be related to the prominent sociologist Bourdieu's "sociology of practice," i.e.,: "a class structure in which individuals in different occupational systems also possess different economic and cultural capital and roughly differentiate between the dominant class (industrialists, executives), the working class (manual laborers, farmers), and the petty bourgeoisie as the overlapping class (small business owners, teachers, and others)". [4] The diverse culture of the major cities in Pakistan, such as Karachi, is attributable to industrialization, and even after the closure of some industries, the industrial culture remains there. However, after the closure of an industrial complex, the site is typically abandoned or demolished, which removes an important layer of the industrial culture of the region. Unlike industrial sites in the Western world, industrial sites in Pakistan are not recognized as heritage sites and are usually ignored by the authorities. They are not currently considered to be potential sites for future city redevelopment, and the political instruments to offer new programs for such sites are limited. The industrial culture of Pakistan has evolved since the country's creation in 1947. There are three main types of industries: state-led industries, private industries, and public-private partnerships. The The objectives of the study described in this paper were:

1.
To identify specific industrial heritage sites, based on the definition provided in the "Nizhny Tagil Charter for the Industrial Heritage" [3].

2.
To propose a systematic process for developing an inventory for use in assessing the historical, architectural, and urban regeneration significance of industrial buildings in Pakistan.
Surveys were conducted to assess the heritage value of four sites: the Karachi seaport, Karachi city railway sites, the Mughalpura railway workshop in Lahore, and the PECO engineering factory in Lahore. Based on international and national precedents for heritage conservation in general, and industrial heritage in particular, criteria and a documentation framework are proposed that can be used to inventory industrial sites in Pakistan. The criteria and framework can be used in future research and by various stakeholders to add new sites and information to the inventory.

Industrial Sites in Pakistan with Significant Heritage Value
After the partition of the Indian subcontinent in 1947, mass migration from India to Pakistan and from Pakistan to India occurred on religious grounds. Some industries also shifted from India to Pakistan and became part of the civil bureaucracy and industrialization of Pakistan, between 1947 and 1958. An example of this is the Batala Engineering Company (BECO), the founder of which, Latif Batala, moved from Indian Punjab to Lahore. The period between 1958 and 1971 was a time of civil and military-bureaucratic capitalism, during which the Pakistani government collaborated with the USSR to construct steel mills in Karachi in the mid-1980s. Steel production became one of the largest industries in Pakistan and eventually became the backbone of Pakistan's economy. The 1971 separation of eastern and western Pakistan resulted in dramatic changes in the politics of the country. A nationalization policy put forward during the period between 1973 and 1977 brought major private industries under the control of the government of Pakistan [5]. This nationalization policy produced negative results because of mismanagement and the withdrawal of private investment. Many industries suffered losses, and, eventually, some were shut down, including the BECO/PECO factory in Lahore (Figures 2 and 3). The nationalization policy coincided with the founding of Pakistan Steel Mills (PSM) in 1973 by the then-prime minister of Pakistan, Zulfikar Ali Bhutto, in a consortium with the USSR.  The project was completed in 1985 and became the largest industry in Pakistan, consisting of 20 different units [6] (Figures 4 and 5). The privatization of the mill in 2006 produced results contrary to those expected from the process, and the industry lost its way forward because of mismanagement by its private owners. Although the industry returned to government ownership in 2011 and its organizational and productional infrastructure were reorganized, the fate of the mills remained unchanged. Eventually, the steel mills were abandoned, and some of the country's economists declared the industry to be sick.  The project was completed in 1985 and became the largest ind consisting of 20 different units [6] (Figures 4 and 5). The privatization produced results contrary to those expected from the process, and th way forward because of mismanagement by its private owners. Altho returned to government ownership in 2011 and its organizational infrastructure were reorganized, the fate of the mills remained uncha the steel mills were abandoned, and some of the country's econom industry to be sick.      Another important site of industrial character and heritage valu The seaport has a rich history from social, architectural, urban plan perspectives. The port was one of the main reasons why the British to of Karachi. Upon doing so, they immediately started working to estab to and from Karachi. Within a few decades, what had been a small fish been converted into a bustling city because of the port, which act various trade, manufacturing, and transportation activities [7]. The ci growing around the port. City streets and railway tracks leadin constructed. The seaport remained the hub of trade and transport Pakistan as a whole. Most of the buildings constructed at the port d are still in use for various purposes, but some have been abandoned. Another important site of industrial character and heritage value is Karachi harbor. The seaport has a rich history from social, architectural, urban planning, and economic perspectives. The port was one of the main reasons why the British took control of the city of Karachi. Upon doing so, they immediately started working to establish sea trade routes to and from Karachi. Within a few decades, what had been a small fishermen's village had been converted into a bustling city because of the port, which acted as a catalyst for various trade, manufacturing, and transportation activities [7]. The city of Karachi started growing around the port. City streets and railway tracks leading to the port were constructed. The seaport remained the hub of trade and transport for the city and for Pakistan as a whole. Most of the buildings constructed at the port during the British era are still in use for various purposes, but some have been abandoned.
The port is currently not open to the public because of changes in security protocols put in place after the attacks in New York on 11 September 2001, and the subsequent invasion of Afghanistan by the US. The abandoned buildings have the potential for reuse and reintegration of the port into the community, as the security situation in Pakistan is better now than it was after 9/11. Similarly, the city of Karachi, the cantonment railway station, and the Mughalpura railway workshop (Figures 6 and 7) in the city of Lahore each have a rich history and architecture that are part of the industrial heritage of Pakistan. Figure 8 shows the location of buildings with heritage value at the port site. and reintegration of the port into the community, as the security situat better now than it was after 9/11. Similarly, the city of Karachi, the can station, and the Mughalpura railway workshop (Figures 6 and 7) in the c have a rich history and architecture that are part of the industrial her Figure 8 shows the location of buildings with heritage value at the port   better now than it was after 9/11. Similarly, the city of Karachi, the can station, and the Mughalpura railway workshop (Figures 6 and 7) in the c have a rich history and architecture that are part of the industrial her Figure 8 shows the location of buildings with heritage value at the port

Methodology for Documentation and Industrial Site Inventory in Pakistan
A systematic inventory of heritage sites is important as a precursor to the sites' conservation and management [9]. It is important to have a specific inventory system for industrial sites that have heritage value, to manage and preserve them for the future. To understand the meaning of industrial heritage and to establish a background for an inventory system for industrial sites in Pakistan, we reviewed the international literature [3,4,10,11]. This included the 2003 Nizhny Tagil charter, originated by TICCIH, which is the world organization representing industrial heritage and the special advisor to International Council On Monuments and Sites ICOMOS. The charter was later presented to ICOMOS for ratification and final approval by UNESCO. The Dublin principles (joint ICOMOS-TICCIH principles) for the conservation of industrial heritage sites, structures, areas, and landscapes, adopted by the 17th ICOMOS General Assembly in November 2011, were also reviewed.
The 2003 charter and the Dublin principles provide a definition of industrial heritage, identification of what constitutes industrial heritage, and a brief discussion of how to ensure, protect, conserve, present, and communicate the heritage dimensions of industrial sites, areas, and landscapes. "What is industrial culture, anyway?" is an article that discusses the material aspects, values, identities (from a Bourdieusian perspective), skills, norms, experience, and stories related to industrial culture. The publications A Handbook on Pakistan's Coastal and Marine Resources and Karachi Port, Golden Gateway to Pakistan provide a detailed description of the seaport history and its value in the development of Karachi. RE-USA 20: American Stories of Adaptive Reuse is a book on successful adaptive reuse projects for industrial sites in the cities of Pittsburgh, New York, and Detroit. The case studies show how adaptive reuse preserves the legacy of the industrial past while playing an important role in the process of urban regeneration [12]. The concept "old is the new new: architecture and the adaptive reuse of the industrial legacy" has been applied to projects such as an electronics factory, a meat-processing plant, and a railway line ( Figure 9) to make existing facilities fit for new functions, with an eye to preserving the spirit of the space at the same time. Sustainable Lina is another book on the adaptive reuse concept that touches on the concept of adaptive reuse through the lens of suitability in architecture. The book discusses the adaptive reuse projects of Lina Bo Bardi, an Italianborn Brazilian architect. One of the most notable of such projects was the SESC Pompéia The industries that were constructed after the partition of the Indian subcontinent also played an important role in the development of the country, including sites such as the Pakistan Steel Mills in Karachi and the BECO/PECO factory in Lahore. Some of the abandoned sites have the potential for sustainable adaptive reuse, to help address the problems of inadequate public amenities, green spaces, affordable housing, educational institutes, and tourism [8].

Methodology for Documentation and Industrial Site Inventory in Pakistan
A systematic inventory of heritage sites is important as a precursor to the sites' conservation and management [9]. It is important to have a specific inventory system for industrial sites that have heritage value, to manage and preserve them for the future. To understand the meaning of industrial heritage and to establish a background for an inventory system for industrial sites in Pakistan, we reviewed the international literature [3,4,10,11]. This included the 2003 Nizhny Tagil charter, originated by TICCIH, which is the world organization representing industrial heritage and the special advisor to International Council On Monuments and Sites ICOMOS. The charter was later presented to ICOMOS for ratification and final approval by UNESCO. The Dublin principles (joint ICOMOS-TICCIH principles) for the conservation of industrial heritage sites, structures, areas, and landscapes, adopted by the 17th ICOMOS General Assembly in November 2011, were also reviewed.
The 2003 charter and the Dublin principles provide a definition of industrial heritage, identification of what constitutes industrial heritage, and a brief discussion of how to ensure, protect, conserve, present, and communicate the heritage dimensions of industrial sites, areas, and landscapes. "What is industrial culture, anyway?" is an article that discusses the material aspects, values, identities (from a Bourdieusian perspective), skills, norms, experience, and stories related to industrial culture. The publications A Handbook on Pakistan's Coastal and Marine Resources and Karachi Port, Golden Gateway to Pakistan provide a detailed description of the seaport history and its value in the development of Karachi. RE-USA 20: American Stories of Adaptive Reuse is a book on successful adaptive reuse projects for industrial sites in the cities of Pittsburgh, New York, and Detroit. The case studies show how adaptive reuse preserves the legacy of the industrial past while playing an important role in the process of urban regeneration [12]. The concept "old is the new new: architecture and the adaptive reuse of the industrial legacy" has been applied to projects such as an Sustainability 2022, 14, 5797 9 of 19 electronics factory, a meat-processing plant, and a railway line ( Figure 9) to make existing facilities fit for new functions, with an eye to preserving the spirit of the space at the same time. Sustainable Lina is another book on the adaptive reuse concept that touches on the concept of adaptive reuse through the lens of suitability in architecture. The book discusses the adaptive reuse projects of Lina Bo Bardi, an Italian-born Brazilian architect. One of the most notable of such projects was the SESC Pompéia Complex in the working-class district of Pompéia in Saõ Paulo, Brazil [13], in which disused factory buildings were converted into a leisure center ( Figure 10).   Based on this review, criteria were developed that can be followe recognize industrial heritage in Pakistan. The international literature wa an understanding of the process of proposing heritage inventorie Canadian documents that were reviewed were useful in understandi proposing heritage building inventories and giving protected stat inventory system implemented in India was also reviewed, as Pakista not only cultural and social norms but also historic archaeological sites monuments. The national inventory system proposed in the province o   Based on this review, criteria were developed that can be followed recognize industrial heritage in Pakistan. The international literature was s an understanding of the process of proposing heritage inventories Canadian documents that were reviewed were useful in understanding proposing heritage building inventories and giving protected status inventory system implemented in India was also reviewed, as Pakistan a not only cultural and social norms but also historic archaeological sites an monuments. The national inventory system proposed in the province of S [18,19] provided a well-established theoretical basis for the framework p Based on this review, criteria were developed that can be followed to identify and recognize industrial heritage in Pakistan. The international literature was studied to form an understanding of the process of proposing heritage inventories [9,[14][15][16][17]. The Canadian documents that were reviewed were useful in understanding the concept of proposing heritage building inventories and giving protected status to them. The inventory system implemented in India was also reviewed, as Pakistan and India share not only cultural and social norms but also historic archaeological sites and architectural monuments. The national inventory system proposed in the province of Sind in Pakistan [18,19] provided a well-established theoretical basis for the framework proposed in this research.
The main outcome of the literature review was a set of criteria for the recognition of industrial heritage in Pakistan and an initial inventory form that was used during the surveys conducted by the first author in 2019 and again in 2020-2021, to document certain industrial sites in Pakistan. During the documentation and surveys, the first author visited various sites, updating the inventory form as needed for different cities in Pakistan, to identify potential sites that could be part of the inventory.
Along with the site visits and surveys, various archives were reviewed to search for historical maps, photos, and documents concerning the surveyed sites. These archival data sources were very useful in finalizing the industrial heritage inventory. To assess the level of understanding of industrial heritage among professionals and the public in Pakistan, the authors conducted semi-structured, qualitative interviews in the cities of Karachi and Lahore. Before the interviews were conducted, specific sites (such as the Port of Karachi, the Karachi city railway station, the Mughalpura railway workshop in Lahore, and the PECO factory in Lahore) were selected for visits, based on their architecture, history, and role in economic and urban development, to gain a better understanding of the sites prior to discussing them in the interviews. The interviewees included employees and managers at the surveyed sites, along with professors, architects, students, heritage conservationists, industrialists, and members of the public (Table 1). The questions used in the interviews were open-ended and were based on the literature review, conducted for the ongoing Ph.D. research of the first author, and a broader study of heritage inventory systems.
Among the questions asked were the following: What do you think about industrial heritage in Pakistan? Are industrial sites with heritage value recognized as a separate heritage category? Do industrial heritage sites need preservation? What are the heritage values of industrial sites? What do you think about the adaptive reuse of abandoned industrial sites? Does the Antiquities Act of Pakistan cover modern and industrial heritage? Will a separate heritage inventory of industrial sites be useful in Pakistan? These questions were compiled after studying the inventory system proposed by Dr. Anila Naeem in the Sindh province of Pakistan [18,19], as well as the Indian documents [16].
Given that the topic of industrial heritage is new in Pakistan, the semi-structured interviews were intended to allow the interviewees to answer the questions in as broad a fashion as they desired. Most of the interviewees responded that industrial sites are not usually considered to be heritage sites in Pakistan and that there are no special means to recognize them as special or separate heritage sites, according to the Pakistan Antiquities Act. The interviewees did not consider most of the sites to be architectural masterpieces or of sufficient age to be considered heritage, except for the railway sites in Pakistan. This is probably because the policies, laws, and practices related to heritage in Pakistan are mostly focused on archaeological artifacts and ancient monuments.

Critical Derivation
The history and development of a community are always linked to its places and buildings and they are valued for that reason. They define the community, exhibit the uniqueness of its past, and contribute to the sense of space. Historic buildings, archaeological sites, industrial landscapes, religious and cultural sites, landscapes, and streetscapes can all be part of the uniqueness and significance of the society.
Pakistan, as a country, was created after the partition of the Indian subcontinent in 1947, when British rule ended. In addition to its historical heritage, one of the forms of immovable heritage that we can preserve for future generations is industrial heritage. The Antiquities Act of 1975 serves in Pakistan as a guiding document for giving protected status to immovable heritage, but it does not emphasize and categorize sites of an industrial nature [2,20,21]. As in the Western world, industrial buildings/sites of value are referred to by a specific term, "industrial heritage," and are preserved (mostly by adaptive reuse for suitable functions, if abandoned) because of their unique heritage value and architectural, structural, and spatial features. The industrial heritage of Pakistan can be brought to general attention through the development of an industrial heritage inventory.

Proposed Inventory
Based on the review of national and international literature, insights gained from attending lectures and workshops on industrial heritage, and site surveys and visits to Pakistan, an initial framework for the development of an industrial heritage inventory for Pakistan is proposed as an outcome of this research. This development process is presented in the steps described below.

Step 1: Why and How? a
Vision statement and purpose: No specific resource can be utilized to its full potential if it is not well understood. Inventories are crucial to understanding heritage and its future utilization potential [9,15]. The purpose of the proposed inventory is to highlight the industrial heritage of Pakistan so that its potential and value in terms of urban regeneration can be utilized in the future. This inventory will contribute to the recognition of industrial heritage in Pakistan. It will be useful as a reference in identifying additional industrial heritage sites in different parts of Pakistan in the future.
An industrial site inventory can be a tool for informed decision-making. It can improve the understanding of a site's heritage value among the community and government authorities, and it can also help in the following ways: • Identification and protection of important industrial sites; • Identification of suitable reuse for abandoned/underused heritage buildings; • Conservation, management, and reintegration of important industrial sites in the community and in regional planning; • Underscoring how these sites can best contribute to tourism and urban regeneration.
An industrial heritage inventory can provide historical records; it can be an important reference source and tool for researchers, educators, the authorities, and others who have an interest in industrial heritage and seek to refer to and build upon existing knowledge. Such an inventory can also help owners and designers to adapt structures for new functions, generating civic pride in the community by stimulating interest in local history and the development of the city. b Scope of the inventory The successful establishment of an industrial heritage inventory is highly dependent on the available materials and resources. The aim is to build the inventory step by step, adding properties in the future as opportunities arise and resources allow. Part of the approach is to begin with familiar sites for which historical information and data are already available. Another part of the approach is to start with sites that meet the predefined criteria for heritage in Pakistan, such as industrial sites of a certain age, sites within a certain geographical area, and sites associated with certain functions and events. The sites and buildings that have already been designated as heritage areas provide a reasonable starting point. For example, the case study of the Port of Karachi provides an appropriate starting point, as the site has different types of buildings and infrastructure, and one of the administrative buildings, i.e., the KPT head office, is on the national heritage list. c

Future use and upkeep of the inventory
To ensure the long-term relevance of the inventory, provisions must be made for its management. The addition of new places that are of value and changes to the existing data must be undertaken if the inventory is to remain relevant. Heritage and community organizations, local libraries, and the archives departments of organizations such as the Karachi Port Trust, Railway Pakistan, and Heritage Cell NED can be the custodians of the inventory. Furthermore, the research described in this paper can be continued in collaboration with any of the mentioned or other related organizations.

Step 2: Analysis and Selection of Sites for the Inventory
The process of analysis started with an online survey of possible industrial heritage sites in Pakistan, followed by site surveys in the cities of Karachi, Lahore, Faisalabad, and Swabi to identify places of interest. The site surveys were conducted in January 2018. The survey identified some potential industrial sites, such as the Port of Karachi, the PECO factory in Lahore, the Pakistan steel mills in Karachi, the Karachi railway stations, and the Mughalpura railway workshop, among others. To narrow the selection, state-led heavy industries were targeted as a starting point.
During the second round of site visits, conducted from December 2019 to January 2020, the selection was further narrowed down to a single case study of the Port of Karachi. This port is a complex consisting of several types of structures, including railroads, bridges, ramps, administrative buildings, sea routes, harbors, dockyards, cranes, and a residential building. The site was selected to test the usefulness of the inventory in showing the value and status of industrial heritage in Pakistan.
In addition to the interviews conducted, the surveys included the gathering of pictures and archival data collection from the archives department of the Karachi Port Trust and the Sindh archives in Karachi.
The information recorded during the site surveys included the following: (a) Evaluation of the data.
The data collected from the surveys were evaluated to determine the heritage values of the sites, investigate the importance of each site, and learn the stories that people relate about the site that need to be preserved and passed on to future generations.
The aspects of an industrial site that can be related to its heritage value include its age and connection to the people of Pakistan, as well as important events in the community's history and city development. Studies of such sites can further our understanding of the past and the development of the city.
Research that can be conducted on candidate sites includes the following: Data can be collected from archives, libraries, heritage organizations, government ministries, and the Internet.

Step 3: Industrial Site Inventory Record (ISIR)
A detailed inventory of a site can be conducted using the standard "core data index form-CDIF" proposed by Dr. Anila Naeem for the province of Sindh. This form provides information regarding the function, history, physical condition, and architectural merits of buildings. This form also records the ownership details of the buildings as well as the socio-economic data of building owners and users [18]. A review of the heritage documentation and inventory system that is followed in India revealed the importance of mapping the basic physical and functional attributes of buildings and categorizing the important architectural elements of buildings [9,15]. These two inventory systems provided the basis for the proposed "Industrial Site Inventory Form" (Figure 11). Completing this form is the first step in developing an inventory of industrial heritage and will be used during the initial surveys of different sites. This form will be used as a fixed general format to record a building's historic references, usage, construction/style information, ownership, and location within the urban fabric during the surveys. The purpose of the data collected through this form is to guide a detailed study of the site, assess its significance, and determine whether it should be added to the inventory. The form will also serve as a tool to help architects, designers, users, and building owners in maintaining the building in question or in proposing a new function for it. These two inventory systems will also be useful in identifying those characteristics that should be considered criteria for designating a site as industrial heritage.

Step 4: Eligibility Criteria
Criteria are proposed in Table 2 for the selection of sites and for assessing their eligibility to be included under the umbrella of industrial heritage, based on the definition given in the Nizhny Tagil Charter, 2003. The data collected during site surveys were processed according to the existing Pakistan heritage inventory forms so that they could be used with the proposed industrial heritage inventory form.

Other Characteristics That Can Be Considered When Assessing Suitability
In addition to the criteria in Table 3, a study of the guidelines established by the Canadian government for heritage inventories [14,17] and the guidelines proposed in Sindh, Pakistan [18,19] suggest some additional characteristics that should be considered when determining whether to designate a site as industrial heritage in Pakistan. These guidelines include questions such as the following: How well does the site represent a particular heritage value? Is it the finest or the only remaining site example of its type, in terms of architecture, history, and typology? Does it represent an important era or innovation? Does it possess multiple heritage values? Did it make a significant contribution to the development and historic character of the neighborhood, district, or city? How well are the character-defining elements of the site preserved? Is the integrity of the site preserved? A potential site can have more than one heritage value, but if the site is altered to the degree that it cannot convey its historic value, then its integrity is lost. stainability 2022, 14, x FOR PEER REVIEW Figure 11. Proposed industrial site inventory form.

Step 4: Eligibility Criteria
Criteria are proposed in Table 2 for the selection of sites and for as eligibility to be included under the umbrella of industrial heritage, based on given in the Nizhny Tagil Charter, 2003. The data collected during site s processed according to the existing Pakistan heritage inventory forms so th be used with the proposed industrial heritage inventory form.

Documents
Processing Machinery, workshops, Figure 11. Proposed industrial site inventory form.  A statement of significance (SOS) is a useful tool for summarizing the results of a historic site evaluation. A statement of significance is a brief description of a place/building that summarizes its value, why it is important, and what are its most important features [21]. The data collected using the industrial site inventory record (ISIR) will be used to develop an industrial site statement of significance. The "Guidelines for Heritage Inventories by the Canadian Government" [14,17] and Indian heritage inventory documents [16] were reviewed in developing a statement of significance form for industrial sites in Pakistan. In both Canada and India, during the heritage site inventory process, a heritage site statement of significance is recorded. In both cases, the SOS addresses three key points that are considered important for understanding the heritage value of a site/building. Based on these points, an industrial site statement of significance is proposed for the industrial heritage inventory in Pakistan ( Table 3).
The industrial site SOS is structured in three parts: (a) The building and its context.
This part briefly describes the building and consists of a picture of the building, along with its context and two to three sentences related to the setting of the site within its surroundings.

(b) Heritage value and integrity.
This part includes a few paragraphs that explain the value of the site to the community. It only needs to focus on the historical facts and events that support the statement of significance.
These are the elements that define and convey the character and heritage value of the building/site. This is a brief explanation of the important components that convey the spirit of the site. To ensure the retention of heritage value, contractors need to be aware of the elements that affect those values when intervening in the site for any purpose.
The "Industrial Sites Statement of Significance (Industrial site SOS)" of Pakistan can guide owners, builders, occupants, government ministries, architects, designers, and anyone else who will be making interventions, alterations, or reusing the site for other purposes. It can also be a useful source of information for promotional and educational purposes. The industrial site SOS can act as a decision-making tool for government officials, heritage management organizations, and other property managers.

Application of the Industrial Heritage Inventory Form
The industrial heritage inventory form was developed by considering the experience of the CTU Prague workshop, the NED University Heritage Cell inventory system, and the guidelines for heritage inventory systems developed by the Saskatchewan Ministry of Tourism, Parks, Culture and Sports, and Canada's historic places. Figure 12 illustrates the process, while Figure 13 illustrates the use of the inventory form in assessing the significance and information for one of the sites at the Port of Karachi, i.e., the Napier Mole boat-wharf gate at the Port of Karachi. This form can be replicated for potential industrial sites in Pakistan, to identify them and assess their heritage potential as a step toward their preservation, reuse, and inclusion in the heritage list of Pakistan.
Tourism, Parks, Culture and Sports, and Canada's historic places. Figure 12 illustrates the process, while Figure 13 illustrates the use of the inventory form in assessing the significance and information for one of the sites at the Port of Karachi, i.e., the Napier Mole boat-wharf gate at the Port of Karachi. This form can be replicated for potential industrial sites in Pakistan, to identify them and assess their heritage potential as a step toward their preservation, reuse, and inclusion in the heritage list of Pakistan.

Findings and Discussion
Industrial heritage management is limited in Pakistan and does not identify potential sites for urban regeneration in terms of their value and capacity. Similar to the work in heritage management in Karachi by Dr. Anila Naeem [18,19], this paper focused on the industrial heritage of Pakistan, its management, and its identification by developing criteria for industrial archaeology (Table 4) along with a system for inventorying industrial sites of heritage value.

No.
Name Construction Date City Location Coordinates Figure 13. Sample industrial site inventory form-ISIR, for the "Napier Mole boat-wharf, Karachi port", based on the proposed methodology/process outlined in Section 3.

Findings and Discussion
Industrial heritage management is limited in Pakistan and does not identify potential sites for urban regeneration in terms of their value and capacity. Similar to the work in heritage management in Karachi by Dr. Anila Naeem [18,19], this paper focused on the industrial heritage of Pakistan, its management, and its identification by developing criteria for industrial archaeology (Table 4) along with a system for inventorying industrial sites of heritage value. Pre-and post-partition industrial sites in Pakistan are an important aspect of Pakistan's development history and have made great contributions to urban development. Industrial sites are currently the focus of efforts at renewal and the urban regeneration of cities and towns, but in Pakistan, the social meaning of industrial heritage and the value of its preservation and adaptive reuse have not as yet been explored. Criteria for its identification and classification have not been developed, and the existing heritage laws and conservation practices are only focused on a specific era and typology of buildings and archaeological sites. The vastness and potential of this typology of heritage can be exploited if put in perspective and researched systematically.
The proposed industrial heritage inventory can be used to identify sites with heritage potential by recording the heritage value, character-defining elements, location, and current condition using the "Industrial site inventory record-(ISIR)" and "Industrial site SOS" forms. These forms can be replicated for different industrial sites. The inventory can guide stakeholders in the reuse of abandoned or underused sites for suitable functions that contribute to the urban regeneration of such areas in cities while preserving the spirit of the sites.
The term "industrial heritage" covers a vast scope, and the management of industrial heritage has the potential to not only ensure the preservation of tangible and intangible heritage but also to play a role in sustainable urban redevelopment and the regeneration of cities. A recent example of such conservation and adaptive reuse can be seen in the cities of Beijing, Shanghai, and Chongqing in China, when certain industries shifted from the centers of the cities to suburban areas. The abandoned buildings were converted into cultural precincts, with various use strategies (progressive, creative class, and entrepreneurial) [22]. Another example is the cotton mills of Mumbai, India, for which a redevelopment plan was put forward by Charles Correa . Although the plan was not entirely successful, the city of Mumbai learned a lesson that led to the area belonging to the Mumbai Port Trust, being managed sensibly by putting public interest above private gain [23].
The management and adaptive reuse of the industrial heritage of Pakistan must begin with its identification, as explained in Lee's book "Things Don't Really Exist Until You Give Them A Name" [24]. Although the term "industrial heritage" is widely used in the Western world, it is still a new concept in developing countries such as Pakistan. Introducing the concept in Pakistan can open up a spectrum of possibilities, in terms of sustainable urban development, regeneration, and the revival of important areas in major cities, as this field of heritage consists of huge areas and complexes compared to other residential, religious, and cultural heritage sites.

Conclusions
The identification and promotion of industrial heritage can be achieved by locating the potential sites and their characteristics in an inventory system. Along with other heritage management, industrial heritage can play a vital role in city regeneration. These sites can be the lungs and breathing spaces of densely populated cities in Pakistan, such as Karachi and Lahore. Instead of demolition, architects, planners, and heritage conservationists around the world are reusing, retooling, and sustainably regenerating such sites to ensure their heritage value, while benefiting the surroundings.
The criteria and framework developed in this research can be used as tools for industrial archaeology in Pakistan. They can serve as a starting point for the systematic management of industrial heritage in Pakistan and can be used by different stakeholders to build upon in the future. It must be pointed out that for such a vast and complicated field of heritage, beyond the architectural and urban planning fields, political, social, and economic factors related to the choice of suitable projects, public participation, and the vision of government will play important roles in the sustainable adaptive reuse and preservation of industrial sites in Pakistan. More research and innovation are needed to maintain and upgrade the inventory over time. Promoting the inventory process in the related organizations, such as the Karachi Port Trust (KPT), Pakistan Railways, and local government, then developing online maps and databases, can be the next step in promoting industrial sites digitally in Pakistan. Following the example of the Czech Technical University Faculty of Architecture and Arts in documenting the industrial topography of Prague using Google Maps and GIS software [25], industrial site location data can be linked to texts and pictorial information for each site.