explosion hazardof acoal dust/air mixture upon contact with an ignition source (e.g. hot surface, mechanical and electrostatic sparks, open fire source) in apparatus involved in the storage, dust extraction, grinding and pneumatic transport ofcoalon the premises of acoal mill. an uncovered conveyor belt preventing the installation of decoupling cylinders.
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Dec 09, 2011·Coalmines generally have active mining zones and areas that were previously mined. These mined-out areas can be abandoned areas that are no longer ventilated and are separated from the active mining areas byexplosion-resistant structures called seals. Seals are designed to contain anexplosionwithin the abandoned area.
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