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DSI Underground Systems Inc. DSI Underground Systems Inc.
metsales@met-tech-industries.comUSA
DSI Underground Systems Inc. is America’s leading manufacturer & supplier of specialist ground support products to the underground industry.

Heintzmann Corporation Heintzmann Corporation
heico@netscope.netUSA, Virginia
The underground roof support specialists.  We provide steel supports, arches, and other mining products.  The best kept secret in longwall.


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