Best way to make coal a cleaner fuel is to mine it then send it to a coke works, in Newcastle at the Ottovale coke works they had the best system there, the coal was mined from local pits then it was sent into the coke works which turned out coke, heat and oil. The heat was used in a power station to generate electricity, the oil was sent to a refinery to be made into petrol, diesel and creosote and the coke was sent to steel works. That is the best system keeps hundreds/thousands of people in work, solves the energy problems in the county and helps other industry produce products.