He said the FAA initiated a 120-day Special Emphasis Review of the airline February 22, because of ValuJet's explosive growth and because of four safety-related incidents in January and February of this year.

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Beside beefing up the rules to detect explosive methane or coal dust, the proposed law would make it a felony to avert safety standards and to give advance warnings that inspectors were on the premises.

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Safety features are designed to keep any source of heat or electricity from igniting this explosive brew.

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