|
PL282281A1
|
|
Mining car pusher
|
|
PL281778A1
|
|
System for supplying process air to a grain classifying jigger
|
|
PL281274A1
|
|
Hoisting machine trave speed control system
|
|
PL280955A1
|
|
Filler barrier for use in filling abandoned mine workings
|
|
PL280892A1
|
|
Method of deobturating an obstructed dewatering hole
|
|
CN1048908A
|
|
Longwall arm combine
|
|
PL280482A1
|
|
Method of and apparatus for controlling dustiness of air
|
|
GB8915030D0
|
|
Longwall mining machine
|
|
PL278708A1
|
|
The way of holding the roof protection in the wall heading and the protecting device for holding the roof in the wall heading
|
|
PL278563A2
|
|
Method for increasing the range of mechanical coal enrichment
|
|
PL244226A1
|
|
Longwall scraper conveyor turning station
|
