coke ovens industry profile draft report prepared for daniel c mussatti us environmental protection agency innovative strategies and economics group md 15 office of air quality planning standards oaqps division research triangle park nc 27711 by institute center 27709 epa contract number 68 d4 0099 rti project 7018 061 november 1998 ii contents section page 1 introduction 2 the supply product oven production process coal preparation charging 4 coking pushing 3 quenching 5 recovery major co products 6 crude secondary 7 9 costs 10 capital 11 variable 13 raw materials labor