SHM spokeswoman Jennifer Hawley said the newer system, mounted on the rear of the chain conveyor base frame, replaces the straight conveyor boom and the swing conveyor belt system that the company first supplied in that location on frame.
“The right angle conveyor system uses the same drive components, conveyor chains and shafts as the straight conveyor boom, thus enabling customers to utilise existing equipment when retrofitting the … system to existing highwall miner systems,” she said.
Additionally, to enable the loading of stacking conveyor systems, the right angle conveyor can be installed on either the left or right sides of the miner. The choice, Hawley said, is primarily site and geology specific.
One other advantage of the SHM addition over the design used previously (pre-SHM40) is a reduction of required bench width by “20 to 25 feet, which rivals the narrow benches of a Vertical Base Frame System,” she noted. A second advantage is to allow placement of the operation’s coal stockpile within the operating pit from the highwall to the spoil bank.
As the company prepares to ship its latest system, SHM-52, Hawley said the right angle conveyor will not only make mining more efficient for highwall mines, but also reduce headaches through the system’s retrofit ability.
“The right angle conveyor system uses the same drive components, conveyor chains and conveyor shafts as the straight conveyor boom, thus enabling customers to utilise existing equipment when retrofitting the … system to existing miner[s],” she said.
Superior Highwall Miners, based in Beckley, West Virginia and with an international office in the Netherlands, celebrated its 50th unit sold in August 2006. It has units working on 40 locations worldwide.