§ Mr. Eadie
The following table shows, for the last four years, the quantity of coke—including coke breeze—consumed by the iron and steel industry, and estimates of the percentage derived from imported coal:
Consumption (million tonnes) Estimate of percentage of consumption derived from imported coal 1974 10.5 6 1975 9.3 6 1976 10.5 9 1977 9.2 9
§ Mr. Benn
It has not yet proved feasible to produce metallurgical coke from general purpose coals alone. Research in this country is showing that careful blending of such coals with coking coals is enabling larger proportions of the former to be used in manufacture of metallurgical coke in coke ovens than was hitherto thought possible, but even then the general purpose coals do not constitute the major part of the blend. Formed or briquetted coke processes offer the prospect of using mainly general purpose coals as the feedstock, but such cokes have yet to be proved satisfactory for consistent and efficient blast furnace operation.