Determine 3 focuses on a similar region with the copper shaft furnace following 2½ decades of Procedure with the improved silicon carbide bricks (except for the ruined spot in the very best area of the photograph, which was where the regular silicon carbide bricks had been used for comparison for https://www.facebook.com/permalink.php?story_fbid=pfbid02LJ9LkYSgMgGfwHgRv6arAYnVmSddNSiHw67gq6A8nr38NE9q2L4uywTLkZLJD7mMl&id=61560512640678&__cft__[0]=AZXOlqXwSyHZR0_jjQ0zO4hgkRYZ_iixit3fnGpkJ1RpxcsRrXPVm_bWsRPYkGJPS3MpILc6MmzwRZqnLntJ5fb05aM5Sb1CsIGbtxM08zPgcRYrGXg1Sq8Nmc8DlVVndIMYoAMF2Aiwp5j3nm54FP3rQsfkqn1HsWQ1JBtO7ElUiStt0b_RPRdgSggFRGTSm-3VuyMbUo4zgBYx11iawNiI&__tn__=%2CO%2CP-R