Mine Ventilation Services, Inc.

http://www.mvsengineering.com/

FIT Ventilation
FIT Ventilation - Your source for affordable portable ventilation.
http://www.fitventilation.com

Schaefer Ventilation
Ventilation and circulation fans for the greenhouse industry.
http://www.schaeferfan.com/Horticultural_Ventilation_C264.cfm

Vostermans Ventilation B.V.
Vostermans Companies is the parent company of a multinational enterprise, founded in 1952. Vostermans Ventilation B.V. Vostermans Alu Foundries B.V. Vostermans Tooling and Prototyping B.V.
http://www.vostermans.com

Smoking and Ventilation Standards
Americans for Nonsmokers' Rights (ANR) works to pass legislation at all levels of government to protect nonsmokers from secondhand smoke and protect youth from tobacco addiction. The American Nonsmokers' Rights Foundation (ANRF), ANR's educational arm, promotes smoking prevention and education about smoking, passive smoke, and the tobacco industry.
http://www.no-smoke.org/getthefacts.php?dp=d20

Whyte-Hall mining equipment
Innovative products for hazardous environments and workplaces. Explosion protected products for air movement, Lighting and pumping. Our products are sold and distributed throughout Australia, New Zealand, Asia, Europe and the Middle East
http://www.whyte-hall.com.au

U.S. Products
Cooling, ventilation, dust proofing systems for control panel and drive motors; solutions for all your contamination, ventilation and cooling needs.
http://www.usprod.com/

Infography about Mine Ventilation
Sources recommended by a professor whose research specialty is mine ventilation.
http://www.infography.com/content/994105170943.html

Air Conditioning and Ventilation
A group of companies working in the commercial and industrial sectors of the air conditioning and ventilating industries, offering sales of equipment, installation and full maintenance backup. We offer a free estimation service, which can include design if required. Our fully qualified engineers will come to site and quote a package, tailor made to your individual requirements.......
http://www.air-conditioning-ventilation.co.uk

Food Industry Technical Ltd
Food Industry Technical are leading specialists in energy saving ventilation systems for commercial kitchens
http://www.foodindustrytechnical.com