LIME SAND STONE

Hokitika Guardian, 16 November 1931, Page 7

LIME SAND STONE

USE INCREASES IN GERMANY. Lime sand stone and burnt clay-brick are equally good, and of equal vahie with regard to their ability to withstand pressure, fire fliid weather. In consideration of the fact that the claybrick, owing to the tedious drying and burning process, is much more expensive than the lime sand stone, which is produced in a much 'simpler manner, tile latter has for many years been preferred in Germany out of purely economical reasons. Ordinary sand, to be found practically everywhere, mixed with about six to eight per cent, of lime, is the composition of which lime sand stone is made. The sand is put through sieves and the quicklime (aetzkalk) is ground. Twenty-four hours after the sand has been taken into the factory the stone is finished and ready for building purposes, - i Its usefulness is unlimited, It is used for building private houses, settlements, churches, Government buildings, and so on, The develoepment of the industry is surprising. The yearly output of German lime sand stono factories increased from 300 million in the year 1910 to 1550 million in the year 1914. After the war lime sand stone factories were established in Holland as well as largo works in Germany, for example in Hamburg and Hanover • also in Switzerland, France, and in the United States, showing a daily production ol 200,000 stones and more. More than 2,200 million lime Sana stones were supplied to the building market of Greater Berlin up to 1926.