National Chimney Sweep Guild Promotes professionalism in the chimney service industry, providing information and continuing education opportunities to keep members up-to-date on changing technology. http://www.ncsg.org/

Hamon Custodis World leader in the turnkey design, construction and maintenance of concrete chimneys and silos, steel stacks and exhaust ductwork. http://www.custodis-us.com/

Chimney Sweeps of the World Site links to yellow pages, certain chimney sweep guilds and is beginning to be able to provide chimney sweep contact information in a variety of world locations. http://chimneysweeps.com/

R and P Industrial Chimney Co., Inc. Design, construction and maintenance of industrial and commercial chimneys, smokestacks, and silos. http://www.randpindchimney.com/

International Chimney Corporation Provide services in all areas of industrial, commercial, and institutional chimney construction and maintenance. http://www.internationalchimney.com/index.html

Gibraltar Chimney International Specializes in the maintenance and construction of stacks and chimneys for industrial and commercial applications. http://gibraltarchimney.com/

Safeside Chimney Residential and commercial chimney and duct cleaning and maintenance in Connectictut and Rhode Island, United States. http://www.safesidechimney.com/

Hadek Protective Systems Supplier of acid resistant internal lining systems for power plant chimneys and flue gas ducts. Details on product line, worldwide projects, technical support and supervised installation services. http://www.hadek.com/

Texas Shafts Inc. Drilled piers for highway and commercial applications. http://texashafts.com