The Pollution Prevention and Abatement Handbook of World Bank is a comprehensive manual for industrial pollution control. Except policy issues it also covers 40 industrial sectors:
http://wbln0018.worldbank.org/essd/essd.nsf/Docs/TOC?OpenDocument

The Canadian Pollution Prevention Information Clearinghouse (CPPIC) is a database providing search over 1,200 P2 references ranging from fact sheets to case studies with the quick text search
http://www3.ec.gc.ca/cppic/en/index.cfm

Envirowise from U.K. provides Practical Environmental Advice for Business in 14 industrial sectors
http://www.envirowise.gov.uk

Industrial Sector & Technology Profiles:This site and the attached pages cover techno-economic aspects of industrial activities resulting from the work of the United Nations Industrial Development Organization (UNIDO) with industry in both developed and especially developing countries concentrating on: energy efficiency & climate-related issues; cleaner production and general environmental management. https://www.unido.org/ssites/env/sectors/SIDsectors.html

Environment Australia's collection of 138 case studies show how companies can reduce production costs, save resources, reduce waste and maintain a competitive edge. Eco-efficiency & Cleaner Production Case Studies by Industry Type: http://www.ea.gov.au/industry/eecp/industry.html

This online collection of pollution prevention core references includes technical references, fact sheets and case studies on pollution prevention for selected industry sectors.
http://wrrc.p2pays.org/industry/indsector.htm

UNIDO:Information Sources on Cleaner Production: http://www.unido.org/ssites/env/envlearn/LUeight04.html: UNIDO-generated sectoral information

Cleaner Production Case Studies in China: http://www.chinacp.com/eng/cplinks/caselinks.html#Collections A large number of factories in China are implementing cleaner production / pollution prevention projects. This page provides links to descriptive pages for each of the factories. Some factories include case study information.
http://www.chinacp.com/eng/cp_factories.html

Case Studies and Publication Database in different industrial sectors is available in:
http://www.emcentre.com/unepweb/publication/index.htm

Cleaner Production Data Search, 190 links of Cleaner Production Technology in different industrial sectors in Japan:
http://nett21.unep.or.jp/GECweb/asp-bin/en_DataSearch.asp

Cleaner Production Case Studies of New Zealand:
http://www.arc.govt.nz/cp/aindex.htm

Metal Finishing/Electroplating Industry: Case Studies and Fact Sheets:
http://es.epa.gov/cooperative/international

A guide to Cleaner Technologies and alternative metal finishes: http://es.epa.gov/oeca/fedfac/fflexp2/alt-metl.html

Industry Specific P2 Guides Technical manuals for four industries: printing, plastics, raisin drying, and wine making Also includes annotated links to examples of P2 in action on the Internet. http://www.mrw2.interscience.wiley.com/enviroglobe/p2/index.htm

Working papers and other materials related to the Economics of Industrial Pollution Control Research Project.
http://www.worldbank.org/nipr/work_paper/

Small Business Waste Reduction Guide http://es.epa.gov/new/business/sbdc/sbdc.htm

Technical Case studies in 18 manufacturing sectors are provided in: http://www.emcentre.com/unepweb/tec_case/manufact.shtml

The US Environmental pollution prevention project, EP3, publishes EP3 Case Studies of electroplating, textile, battery manufacture, printing and tanning industry in : http://es.epa.gov/ep3/ep3300.html