252 THE COLLIERY GUARDIAN. February 11, 1916. HEAD, WRIGHTSON & GO. LTD. Thornaby & Stockton-on-Tees. London Office S, Victoria Street. Westminster, S.W. ■ NOTANOS WASHER. P As EVATOR. IV 7 a . TIPPLER COLLIERY SCREENING PLANT -------------L---i----—--: . . L_ !5i ?!- iT . • '^L ■1U . M < B * ■ ■ .} •< •: >*?.: iff ... I uf \ \ si :t ' f '■4 , .' M Sf-. ' **’ i