Jasper County Democrat, Volume 20, Number 41, Rensselaer, Jasper County, 18 August 1917 — Page 7 Advertisements Column 1 [ADVERTISEMENT]

A Toronto newspaper says that a company making Portland cement at Durham, Ontario, is now turning out as a by-product from the feldspar twelve to sixteen tons of potash daily. Feldspar rock is added to the limestone as a raw material for cement, and a process has been evolved for collecting the liberated potash. Both muriates and caustic products are prpduced. and while the market standard of the former is fixed at SO per cent to the trade, the company asserts that it is possible to produce an article which is almost pure.