pneumatic injection

pneumatic injection

[nu̇′mad·ik in′jek·shən]
(mining engineering)
A method for fighting underground coal fires, developed by the U.S. Bureau of Mines; this air-blowing technique involves the injection of incombustible mineral, like rock wool or dry sand, through 6-inch (15-centimeter) boreholes drilled from the surface to intersect underground passageways in the mines.
References in periodicals archive ?
The gas was injected at flow rates ranging from 300 to 800 scfm using a proprietary high-pressure pneumatic injection module designed to regulate the high flow rate.
A small pneumatic injection press from England was introduced at the show by MCP Equipment (distributed here by TomKen Tool & Engineering, Inc.
based in Taiwan, with a pneumatic injection system that will inject pulverized