… of nails, spikes, etc., such as : (1) Forged cramps or dogs (generally with angular shanks which are bent at right … the ends) used for fastening masonry, heavy timbers, etc.; dog spikes used for fixing the rails to the sleepers. (2) …
… dyes. There are other sodium borates (metaborates, hydrogen diborate) for laboratory uses. (2) Ammonium … or by treating an aqueous solution of sodium borate with hydrogen peroxide. White amorphous powder or crystals (with …
… with a sodium sulphide or lime solution. Such wool is recognizable by the presence of hair roots. … brittle state and is easily broken up and removed as dust together with a large part of the natural impurities which …
… the machine, a sewing device equipped to sew the sheets together and usually to place a textile reinforcement over … machines of a kind used in offices to fix documents together ( heading 84.72 ). …
