What caused a "windy shot"? Why were they SO dangerous? (Site 1)

From 1867 to 1906 Indian Territory's mines were the most dangerous in the United States, with more than thirteen miners dying per million tons of coal produced. ... A "windy shot" occurred when a miner used too much black powder or improperly tamped the charge down before setting off the explosion.

i told you before its c

some women in the middle and upper classes worked as doctors, government officials, or priestesses. both women and men enjoyed a better quality of life the higher they were on the social pyramid. the egyptians believed that their class system created a stable, well-ordered society. each group had its own role to play.