Abstract
Following a brief description of the location and features of the Collinsville coal mine, the basic concepts of the coking coal expansion project are described in order to give an appreciation of the origins of the operational problems which caused cokimg coal production losses in 1984 and 1985.
The paper gives explanations of the symptoms and causes associated with the early low production levels of the Coal Preparation Plant.
A description of the significant changes to design and equipment to bring the plant to satisfactory performance is presented.
