| http://www.w3.org/ns/prov#value | - mmable liquid or gas being released to the atmosphere in quantity to create a hazard to employees should it become ignited. (4) At any location where conditions or operations are such that there is a probability of flammable liquid or gas being released to the atmosphere in quantities to create a hazard to employees should it become ignited. (b) When an internal combustion engine is being operated
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