(i) Anthracite is used for domestic purpose because it does not give more smoke and have above 90% of carbon. (ii) Oil refineries are located close to oil fields as it helps to transport crude oil or near ports because most cf the crude petroleum is imported from other countries. (iii) Location of coal fields is an important factor in industrial development because it is the basic source of power and it is heavy and bulky also which is difficult to transport.