Tellus provides safe, cost-effective disposal and permanent isolation of lead contaminated waste generated during the gold assaying process On : September 11, 2020 By : dorrie krahe Category : Case Studies View : 2201 Laboratory analysis during the gold assaying process produces lead contaminated cupels (flat, porous dishes made of a refractory, or high-temperature-resistant material). Download PDF Share This Post : dorrie krahe Previous post: Appointment of Non-Executive Director Next post: Proposed Blue Bush Project – Environmental Scoping Report Submitted