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Mine roof support equipment

E - Fixed Constructions – 21 – F
Patent

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Mine seal with electrically non-conductive ties

E - Fixed Constructions – 21 – F
Patent

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Mine stopping

E - Fixed Constructions – 21 – F
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Mine stopping

E - Fixed Constructions – 21 – F
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Mine stopping

E - Fixed Constructions – 21 – F
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Mine stopping and braces therefor

E - Fixed Constructions – 21 – F
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Mine stopping having a swinging door

E - Fixed Constructions – 21 – F
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Mine stopping, permanent stopping form and method of...

E - Fixed Constructions – 21 – F
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Mine ventilation

E - Fixed Constructions – 21 – F
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Mine ventilation

E - Fixed Constructions – 21 – F
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Mine ventilation panel system

E - Fixed Constructions – 21 – F
Patent

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Mine ventilation structure

E - Fixed Constructions – 21 – F
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Mine ventilation structure and deck panels therefor

E - Fixed Constructions – 21 – F
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Mining installations

E - Fixed Constructions – 21 – F
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Mining method

E - Fixed Constructions – 21 – F
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Modular refuge station for mines and the like

E - Fixed Constructions – 21 – F
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Monitor-feeder/breaker combination and method of mining

E - Fixed Constructions – 21 – F
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Mounting device for a cable cup

E - Fixed Constructions – 21 – F
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Multiple level methane drainage shaft system

E - Fixed Constructions – 21 – F
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