Coal upgrading technology Coal upgrading technology Coal upgrading technology refers to a class of technologies developed to remove moisture and certain pollutants from low rank coals such as sub-Bituminous coal and lignite (brown coal) and raise their calorific values. Companies located in Australia, Germany and the United States are the principal drivers of the research, development and commercialisation of these technologies. Around 30 nations collectively operate more than 1,400 brown coal-fired power stations around the world. Brown coal power stations that cannot economically dewater brown coal are inefficient and cause of high levels of carbon emissions. High emitting power stations, notably the Hazelwood
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