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Mine shaft guide changer

E - Fixed Constructions – 21 – D
Patent

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Mine shaft liner

E - Fixed Constructions – 21 – D
Patent

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Mine shaft sinking

E - Fixed Constructions – 21 – C
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
Patent

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Mine stopping and method of and jack for installing same

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

E - Fixed Constructions – 21 – F
Patent

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Mine stopping, method of constructing same and panels thereof

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

E - Fixed Constructions – 21 – F
Patent

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Mine support

E - Fixed Constructions – 21 – D
Patent

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Mine support

E - Fixed Constructions – 21 – D
Patent

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Mine support assemblies

E - Fixed Constructions – 21 – D
Patent

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Mine support bag

E - Fixed Constructions – 21 – D
Patent

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Mine support cribs

E - Fixed Constructions – 21 – D
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Mine support grout bags and grout packs

E - Fixed Constructions – 21 – D
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Mine support grout bags and packs

E - Fixed Constructions – 21 – D
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Mine support grout packs

E - Fixed Constructions – 21 – D
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Mine support having a linearly moveable and/or pivoting end...

E - Fixed Constructions – 21 – D
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