Explosion protection in the Power & Energy industry is generally concentrated on the plants that manufacture ethanol, coal, and biofuels. Most ethanol is produced from starch or sugar-based crops by dry mill processing which grinds corn into flour and ferments it into ethanol, presenting explosion hazards throughout the process. Coal production generates explosive dust in the conveying process and the grinding of larger coal into finer products. Biofuels require drying larger organic particles or cellulose products, grinding them into finer particles and conveying the dust particles and pellets. All of these processes present opportunities for explosions.