This is how the calcium carbide lamps used by miners in the past worked https://t.co/SfIVrRbsbq https://video.twimg.com/ext_tw_video/1851397459936681984/pu/vid/avc1/560x782/y5v1ojVMwehGvfY7.mp4?tag=12
This is how the calcium carbide lamps used by miners in the past worked https://t.co/SfIVrRbsbq https://video.twimg.com/ext_tw_video/1851397459936681984/pu/vid/avc1/560x782/y5v1ojVMwehGvfY7.mp4?tag=12
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