equipment caused a massive mine explosion that killed 29 men. in april, the deadly explosion rocked west virginia s upper big branch coal mine and today the mine safety and health administration revealed details of their investigation. officials report that sparks from what is called a long wall shearer caused the explosion. here is a picture of one. but it is not the one from big branch. and it is a monster machine that shaves off layers of coal. officials say the one at big branch was missing water sprayers to control the dust and sparks before they turn into explosions. we should note regulators offer ten sited the owners of the mine, massey energy, for excessive coal defendant accumulation and poor ventilation. and now a look at what is working on the road to recovery back in 2005 a florida man opened his food service company with $500. today, business is pooling.