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Job Breakdown Sheets
Breakdown No. 31
Operating a Coal Cutting Machine
Cutting
1: Collect tools and materials required.
2: Examine the working place.
3: Run out haulage rope to anchor prop.
4: Draw machine along.
5: Examine work and collect tools.
1: Collect tools and materials required.
| (a) |
Hammer, pick, gumming shovel.
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3: Run out haulage rope to anchor prop.
| (a) |
Attach cable or air hose to machine and to gate end box.
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| (b) |
Draw off haulage rope, lay out rope in face, leave three loops of rope on drum.
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| (c) |
Set anchor prop at end of rope — head of prop inclined in direction of pull. Use metal shoe if floor is soft.
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| (d) |
Place loop at end of rope to anchor prop.
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| (e) |
Attach gummer or guards to machine (whichever provided).
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| (a) |
Set staker prop against haulage end of machine to hold machine to face.
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| (b) |
Switch on power.
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| (c) |
Control movement of machine along face.
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| (d) |
Remove gummings from behind machine and from the cut.
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| (e) |
Insert nogs every 6 feet into cut.
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| (f) |
Switch off power when anchor prop reached.
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| (g) |
Release haulage rope.
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| (h) |
Remove anchor prop and repeat operations along face. See that machine is left in a well-ventilated position when cutting completed.
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| (i) |
Remove cable or air hose when cutting completed and hang in clean dry place.
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5: Examine work and collect tools.
| (a) |
Check that the cut has been properly supported by nogs and that the gummings have been cleared.
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| (b) |
See that any supports which have been moved have been replaced.
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| (c) |
Remove picks if necessary.
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| (d) |
Collect tools and place where safe.
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GENERAL NOTE: During cutting operations it may be necessary to withdraw and reset the supports from time to time. Great care should be observed and temporary props erected before any of the supports are removed. (See Breakdowns Nos. 12 and 14: Setting props and lids; Withdrawing props and bars.) (See Training Manual No. 2: The support of the roof at the coal face.)
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