sensors used in coal mining,Evolution of Gas Sensors in the Mining Industry - AZoSensorsJun 19, 2012 . Coal mining became a large-scale industry from the 18th century to . The canary (Serinus canaria) was commonly used by miners to help alert.sensors used in coal mining,―Microcontroller Based Smart Helmet for Coal Miners Safety‖collision detection in mining area and RF module used for information transfer to . Helmet removal Sensors for coal miners is designed to be attached to the.
sensors used in coal mining