Documents SP87

SPECIAL PUBLICATION 87 PLACER GOLD RECOVERY METHODS By Michael Silva 1986 CALIFORNIA DEPARTMENT OF CONSERVATION DIVISION OF MINES AND GEOLOGY GORDON K. VAN VLECK, Secretary…

Documents 1-s2.0-089268759500048U-main

Pergamon 0892-6875(95)00048-8 Minerdr Engineerin& Vol. 8, No. 8, pp. 859-870, 1995 Cotwtiebt Q 1995 Elsevier Science Ltd Printed’ &at Britain. All rights reserved…