Coal to chemical production is in China where coal dependent provinces such as Shanxi are struggling to control its pollution. Refined coal is the product of a coal-upgrading technology that removes moisture and certain pollutants from lower-rank coals such as sub-bituminous and lignite (brown) coals. It is one form of several precombustion treatments and processes for coal that alter coal's characteristics before it is burned. Thermal efficiency improvements are achievable by improved pre-drying (especially relevant with high-moisture fuel such as lignite or biomass).The goals of precombustion coal technologies are to increase efficiency and reduce emissions when the coal is burned. Precombustion
Brown Bear, Brown Bear, What Do You See? animals. The book was one of the "Top 100 Picture Books" of all time in a 2012 poll by "School Library Journal". As of 2013, it ranked 21st on a Goodreads list of "Best Children's Books," and the publisher claimed that there were "7 million copies in print in various formats and languages." In 2010, the Texas State Board of Education briefly removed the book from the public school curriculum after confusing the author with philosopher Bill Martin, author of "Ethical Marxism: The Categorical Imperative of Liberation". Brown Bear, Brown Bear, What Do You See? Brown Bear, Brown Bear, What