4. Mining or in situ disintegration of hard material
  5. Processes
  6. Mine safety

Kennedy Metal Products & Buildings, Inc.

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Hydraulically powered door and systems for operating same in...

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Boring
Reexamination Certificate

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Jack for carrying and installing mine panels

Hydraulic and earth engineering – Earth treatment or control – Shoring – bracing – or cave-in prevention
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Mine door system with trigger-actuated latch mechanism

Closure fasteners – Trippers
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Mine door system with trigger-actuated latch mechanism

Closure fasteners – Trippers
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Mine refuge

Mining or in situ disintegration of hard material – Processes – Mine safety
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