Volltextergebnisse:
- w_p
- February 1909. It was caused by too much methane gas in the air which caused a single lamp to explode ... d not be used in gassy pits and that could ignite gas in the surrounding area). 168 men and boys died i
- friemann_wolf
- n werden. Dadurch wird der Wasserdruck reguliert (Gas-fein-Regulierung an der Außenseite des Topfes dur