§ Mr. A. Edwards
asked the Parliamentary Secretary to the Ministry of Works whether the production of slag cement is cheaper than ordinary cement; whether it is as good in quality; and why it is not more extensively used?
§ Mr. Hicks
Slag cement is a cement composed of a mixture of blast furnace slag and Portland cement in which the latter predominates. I am informed that the answer to the first part of the Question is "No." Slag cement is satisfactory for all ordinary purposes. Its extended use will depend on the advantages that it can offer as compared with Portland cement.