>  Term: shaft signal
shaft signal

Code of electric ringing, or for shallow depths, knocking, among the onsetter or hitcher at the shaft bottom, the banksman at the top, and the engineman who operates the winder. Signals inform the latter as to type of load, etc. A telephone is also installed.

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  • ed.young
  • (Milwaukee, United States)

  •  (V.I.P) 21084 포인트
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