TD-16 from Wyo-Ben Inc. is a one-step coated granular bentonite grouting material designed to achieve low permeability seals in water wells, geotechnical borings and heat pump holes. It achieves a range of solids contents, 16 percent to 20 percent solids by weight. TD16's granular nature reduces dusty conditions during mixing operations. Placement of the TD-16 is done using a gear, diaphragm or positive displacement pump. Once in place, the particles continue to swell, sealing off cracks and crevices while gelling to form a caulk-like consistency. Wyo-Ben Inc., Jubilee Booth No. 425