Refined coal Refined coal Refined coal is the product of the application of a coal upgrading technology that removes moisture and certain pollutants from lower-rank coals such as sub-bituminous and lignite (brown) coals and raising their calorific values. Coal refining or upgrading technologies are typically pre-combustion treatments and/or processes that alter the characteristics of a coal before it is burned. The goals of pre-combustion coal upgrading technologies are to increase efficiency and reduce emissions when coal is burned. Depending on the situation, pre-combustion technology can be used in place of or as a supplement to post-combustion technologies to control emissions from coal-fueled
Brown Bear, Brown Bear, What Do You See? Brown Bear, Brown Bear, What Do You See? Brown Bear, Brown Bear, What Do You See? is a children's picture book published in 1967. Written and illustrated by Bill Martin, Jr. and Eric Carle, the book is designed to help toddlers associate colors and meanings to objects. The book itself has little to no plot. Instead, the narrator asks various animals what they see with the response usually being another animal, the respondent is then asked what they themselves see, and the process is repeated. It features a Brown Bear, Red Bird, Yellow Duck, Blue Horse, Green Frog, Purple Cat,