Apr 14, 2017 ... WSDOT Materials Manual M Page 1 of ... comparing dry sample masses before and after the washing process. ... Optional mechanical washing device. ..... FM to the nearest percent for WSDOT Class 2 Sand.
® Washing Systems (TWS) is the premier provider of .... most widely distributed sand washing machines in the World to the sector defining AggreSand – the World's first chassis mounted ...... Manual hand pump for height adjustment.