Gas Control | Introduction | underground COAL. Gas Control. Some mines do not have a gas problem of any type, the quantity of gas in the coal being so low that only ...

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STRATA CONTROL. General. The term "strata control" generally refers to controlling the strata to maintain stability around the mine openings underground where ...

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NSW code of practice - Strata control in undergro, 1 Feb 2015 , NSW code of practice: Strata control in underground coal min 1 Introduction There were 67 fatalities ...