Brüel & Kjær    Norcross, GA 30071-1588
Apr 08, 2011 Noise Sentinel Mining system gathers data on noise-related issues for mining companies, allowing community concerns to be addressed and pre-empting noise-related issues for mining companies. Supplied on subscription basis, service monitors noise levels 24 hr/day and transmits alerts on excessive noise levels via email or SMS, so users can take immediate action. Service also allows remote monitoring of noise levels via Internet.

Acoustical Solutions, Inc.    Richmond, VA 23228
Jan 26, 2007 Made from recycled tires using 82% post-consumer recycled content, Iso-Step has mass of 1 or 2 lb/ft² that lends to effectiveness against airborne and structurally borne sound transmission. Environmentally friendly, rubber-based product can be installed over wood or concrete sub floor as well as under hardwood, vinyl, tile, or carpet flooring. Readily available in 4 x 25 ft rolls, underlayment can be installed as free-floating or glue-down system.