submitted by Kozel to technology 7 hoursMay 10, 2025 00:10:24 ago (+17/-0) (files.catbox.moe)
2plus2equals5 2 points 6 hours ago
Adding a little water to rock creates just enough gas to reliably power a helmet lamp. And become an industry standard.https://americanhistory.si.edu/collections/object-groups/mining-lights-and-hats/carbide-lamps
2plus2equals5 2 points 6 hours ago
Adding a little water to rock creates just enough gas to reliably power a helmet lamp. And become an industry standard.
https://americanhistory.si.edu/collections/object-groups/mining-lights-and-hats/carbide-lamps