E - Fixed Constructions – 21 – D
Inventor
E - Fixed Constructions
21
D
Inventor
Apparatus and method for mining tar sands, oil shales and...
Hook plow apparatus for longwall mining
Hydraulic mining method
Hydraulic mining of oil shales, tar sands and other minerals
Method for mining oil shales, tar sands and other minerals
Hook plow apparatus for longwall mining
Method for mining oil shales, tar sands and other minerals
Method of mining oil shales, tar sands and other minerals
Mining machine propulsion motor
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