Scraper chain conveyor with rack for the chainless feed of winni
Scraper chain conveyor with ventilation parts
Sectional conveyor with sectional rack fixed on the conveyor at
Shearer loader for underground mining operation
Sliding seal for mining machine power tranmission
Spill-plate apparatus for a mining machine
Supply of liquid media for a hydraulic-mechanically operating mi
Support for movable segments in a rack for a drum cutter mining
System for cutting and conveying coal and the like