Alongside firedamp, other damps include " blackdamp " ( carbon dioxide and other gases ), poisonous, explosive " stinkdamp " ( hydrogen sulfide ), with its characteristic " rotten egg " odour, and the insidiously lethal " afterdamp " ( carbon monoxide and other gases ) produced following explosions of firedamp or coal dust.
12.
Miners, who are particularly vulnerable to gas exposure due to an insufficient ventilation, referred to mixtures of carbon dioxide and nitrogen as " blackdamp, " " choke damp " or " stythe . " Before more effective technologies were developed, miners would frequently monitor for dangerous levels of blackdamp and other gases in mine shafts by bringing a caged canary with them as they worked.
13.
Miners, who are particularly vulnerable to gas exposure due to an insufficient ventilation, referred to mixtures of carbon dioxide and nitrogen as " blackdamp, " " choke damp " or " stythe . " Before more effective technologies were developed, miners would frequently monitor for dangerous levels of blackdamp and other gases in mine shafts by bringing a caged canary with them as they worked.
