Show volcanic ash cement A recent number of a nagasaki japan newspaper a cement made from ole inic ashes aich Is sometimes used alone and sonie some times in combination 1 with sand and I 1 ortland cement the ashes are arc much cheaper ind irp are said bald to ho be almost its as offer effert the lo as the cement while hile the to aie used together aith alth st athi 1 gi gibat eat ei adian advantage tage dockyards Dock yards nail docks e etc tc hae bane been constructed aiom th the ash c cement allent large quantities ha 8 I 1 been exploited epo to boica coith china shanghai and formosa and the de luand Is rapidly inc leasing |