FIELD: blasting.
SUBSTANCE: in each compact group of employees there is a smoking employee, equipped with an individual smoking pipe having a code key to open protective folds of an individual lighter with a heating element. The lighter has a button for ignition only with protective folds open that are opened by means of a code key of an individual smoking pipe, and also a locking mechanism with a bimetal element. The locking mechanism is designed to remove an individual lighter with a heating element from an individual smoking pipe only after cooling of the latter. Besides, the individual lighter with a heating element has a chamber made from a close-meshed net made as capable of transmission of atmosphere with combustible gas into the chamber connected with the individual smoking pipe.
EFFECT: simplified monitoring of methane content in that mine, where miners are currently located.
3 dwg
