Hog fuel is a term used to describe:
a. Waste products from hog barns used as boiler fuel in meat processing plants
b. Mixture of waste wood and bark used as boiler fuel in a sawmill
c. Low calorific value waste fuel used as boiler fuel in oil refineries
d. Low calorific value waste fuel used as boiler fuel in meat processing plants
e. Very poor quality of fuel oil used as boiler fuel in sawmills
Answer: B