|
DE933841C
|
|
Pipe connection
|
|
GB750249A
|
|
Improvements in rotary truck-tippers
|
|
DE930510C
|
|
Firedamp protection for overhead wire locomotives in underground operation in hard coal mines
|
|
DE924624C
|
|
Borehole anchor designed as a tie rod for pit lining
|
|
GB731010A
|
|
Improvements in or relating to waste-stowing shoots
|
|
DE919162C
|
|
Setting device for pit stamp
|
|
GB734882A
|
|
Improvements relating to pit props
|
|
DE922523C
|
|
Metal pit punches
|
|
DE927027C
|
|
Firedamp protection for contact wire locomotives for the underground operation of hard coal mines
|
|
DE881034C
|
|
Mine support
|
|
DE888535C
|
|
Pit stamp
|
|
DE925882C
|
|
Borehole anchors for pit construction
|
|
DE920781C
|
|
Borehole anchors for pit construction
|
|
DE899486C
|
|
Compliant pit or route stamp
|
|
DE899485C
|
|
Compliant pit or route stamp
|
|
DE910767C
|
|
Pit or route stamp
|
|
DE888232C
|
|
Compliant pit or route stamp
|
|
DE865290C
|
|
Method for driving up stretches in steep storage
|
|
DE914724C
|
|
Coal plane for steep storage
|
