Concrete in the country / [American Cement Company]. (1910)
American Cement Company · Association of American Portland Cement Manufacturers · leaf 20
Fig. 7.~Filling the Stone (or Gravel) Measuring Box—First Method. … Fig-. 8.—Filling the Stone (or Gravel) Measuring Box When on Top of Mixed Sand and Cement—Second Method. 19 ing. 9.--ilacing the Water on the Stone (or Gravel) which is on Top of the Mixed Sand and Cement. Mixing Natural Mixture of Bank Sand and Gravel Spread out the mixture of sand and gra\ el as…