BLOWING - PowerPoint Presentation

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Uploaded On 2017-07-23

BLOWING - PPT Presentation

FAN 1 GAS TEST STATION 2 FRESH AIR BASE 3 CAVED AIR TIGHT 4 CAVED AIR TIGHT 5 6 PERMANENT STOPPING DOOR OPEN PERMANENT STOPPING DOOR CLOSED 7 8 PERMANENT STOPPING DOOR ID: 572482

permanent stopping air door stopping permanent door air unsafe roof closed open caved clear miner face smoke light tight

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