heavy duty ribbed carpet roll mali guinea line gold mining prospective carpet gold trap sheet gold mining blanket gold sluice washing carpet the thickness is 10mm heavy duty ribbed carpet roll mali guinea line gold mining prospective carpet gold trap sheet gold mining blanket gold sluice washing carpet the size is 1x20 meters/roll heavy duty ribbed carpet roll mali guinea line gold mining prospective carpet gold trap sheet gold mining blanket gold sluice washing carpet the weight is 2.2kg/square meters