Conoco Inc.

David M Miller

Pramod C Thakur

John B Riester

Larry D Taylor

Lloyd E Postlethwait

An improved dust control apparatus for a shearing machine which has attached thereto a spray bar apparatus mounted to and extended from said shearing machine and containing a curtain for dust control and a plurality of spray heads along said spray bar, an improvement in the spray bar apparatus is provided by mounting an extendable spray bar to said spray bar with a hydraulic cylinder attached to said extendable spray bar so that it can be extended or retracted as said shearing machine reaches the end of its cut so that said extendable portion is not damaged when the shearing machine reaches the end of its cut. The extendable portion includes spray heads and a curtain for dust control purposes.

Dust control on long wall shearing machines

Respirable dust particles in air are reduced by spraying with water from high pressure spray nozzles. The removal of particles in the size range most likely to cause pathological damage is enhanced by addition of a surfactant to the spray water.

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Metz, WV, United States of America

David M Miller