… blast furnace slag which requires the addition of a small quantity of accelerator at the time of making up ( heading … Portland clinker with the possible addition of a small quantity of calcium sulphate. It is to be noted : ‑ that …
… for cycles, automobiles, etc. These articles, which are usually convex, hemispherical or flat with grooves normally … of grinding the surfaces first with coarse and then with gradually finer abrasives. The successive operations are …
… less than 600 mm, and hoop and strip. Hoop and strip are usually produced by hot re‑rolling the semi‑finished … cold‑rolled to give a thinner product and a better quality finish. Strip is also produced by slitting “wide …
… of : (a) natural nacreous (pearl) pigment containing guanine and hypoxanthine and obtained from the scales of … heading are mainly those used for domestic purposes and usually sold as “household dyes” (e.g., dyes for clothes, …
… gas, petrol, tinder or other inflammable material. They are usually combinations of cerium and other metals, the most … as a binder, intended for burning slowly within a virtually airtight container which can be carried in …
