This paper dealswith the designofgaschecking safety system for coal mine, which can be put into use for the purpose of monitoring the component of gas so as to keep the coal minesafe.
Health and safety officials have been checkinggas appliances inside the flat to trace a leak, and the apartment block has been evacuated while tests continue.
Meanwhile Jonny, 35, spent summers working in Cross Timbers' fields, first as a construction worker, known as a roustabout, then as a gager, checking oil levels and reading gas meters.