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AU6888881A
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Ranging drum shearer
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US4279443A
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Mining apparatus
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US4290648A
|
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Mining apparatus
|
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US4266828A
|
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Apparatus on drum shearer for cutting through safety wall in long wall mining
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JPS5465102A
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Treating of coal post for preservation of public in long wall type coal mining method
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AU501318B1
|
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Worker protection at nine faces
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JPS5416303A
|
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Apparatus for controlling floated dust powder and like in long wall type coal mining face
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US4099786A
|
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Apparatus for drawing the shearers
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JPS53114704A
|
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Operating device of selfftravelling frame* etc*
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JPS5376102A
|
|
Shifting device of operator
|
|
US4067618A
|
|
Apparatus for protecting of coal mine workers
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|
JPS5339201A
|
|
Automatic conveyor transferring apparatus
|
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AU1802876A
|
|
Apparatus for protecting workers ata coalface from flying particulate and dust materials
|
|
JPS5329202A
|
|
Coal extracting method of long wall coal facing
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|
JPS5322803A
|
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Controll system for selfftravelling frame
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JPS5317502A
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Selfftravelling frame remoteecontroller
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AU8496675A
|
|
Face conveyors drive-chain cleaning device
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JPS5220301A
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Method of mining coal in heap layer
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|
JPS5220302A
|
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Selfftravelling support for metal and coal mining heading
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JPS524403A
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Coal mining machine
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