Journal - South African Institute of Mining and Metallurgy . the potis placed against the lip of the mould. Theother white man (a learner) pulls on the tackle,and the pot is tipped, delivering its contentssteadily into the mould. The tackle is slackenedoft, the empty pot placed on an iron stool ami thelink C slid forward, when the tongs are ready forthe removal of another pot from the furnace; oneboy takes the empty pots from the stool, theother boy operates the furnace door. The mouldsare placed on an iron bench, the tops being on alevel with the floor of the pot chamber. Thismethod has been
Journal - South African Institute of Mining and Metallurgy . the potis placed against the lip of the mould. Theother white man (a learner) pulls on the tackle,and the pot is tipped, delivering its contentssteadily into the mould. The tackle is slackenedoft, the empty pot placed on an iron stool ami thelink C slid forward, when the tongs are ready forthe removal of another pot from the furnace; oneboy takes the empty pots from the stool, theother boy operates the furnace door. The mouldsare placed on an iron bench, the tops being on alevel with the floor of the pot chamber. Thismethod has been worked at our last three smeltsat the Cason Gold Mines, Ltd., and is quite asuccess. Shiftsmen are not taken from their workto assist at pouring, whereas formerly at leastthree were required : the operation is quickerwith consequently less chance of the furnacecooling off; the slag is also quite free fromsplashes of gold on the side of the cone. Inthe diagram II represents an overhead rail, A thecarriage that carries the tongs, A and B run on r *fe Pl»te. UCVAT ION Dec. 1907 Harry D. Griffiths Notes on Tin Mining Colony. I17 the rail I!. < i is a .?ham on each 3ide of A andB, being equal to E II. the chain i- the position of the linkwhen taking pots from the reverberatory and allowing freedom of action ; E positii f attach incut of tipping chain. F F shows in section thetongs and position of tipping-chain before andafter the pot has been tipped. When about toremove pots from the reverberatory the tongs arepushed forward, B also runs forward, buttingagainst and pushing A before it, whilst on thereturn B drags A by means of the chain <i. Itwill thus be seen that A i- always in the correelposition for a straight pull on the tongs whenthey are being tipped. When all pots arc pouredthe chain K can be unhooked at E, and block andtackle can be pulled up out of the way when thefresh pots are being put i
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