Pl'RINGTON.] 
FINENESS OF ALASKAN GOLD. 
207 
reached it may he readily detected by its greater weight. A second 
flux of borax alone is then added, and when this has melted the 
product is ready for pouring. 
A small crane to lift the crucible from the furnace and to pour the 
gold into the mold should be rigged overhead. Special tongs for lift- 
ing the crucible are made. 
Though the mold should not be heated too much, it should always 
be raised to such a temperature that oil will burn on contact with it. 
On removing the bullion brick from the mold it is placed in a pickle 
of three to four parts of water to one of nitric acid, which serves to 
clean the gold of surlicial deposit. By using a hammer and a steel 
slag brush the brick is made ready for shipment. 
FINENESS OF GOLD. 
The following table shows the fineness of Alaskan gold: 
Table 13. — Fineness of gold by districts and. creeks. 
District. 
Fineness. 
Authority. 
Juneau : 
Per ounce. 
Gold Creek 
$17.50 
Operator. 
Do. 
Windfall Creek 
17.50 
Lemon Creek 
14. 00 
Do. 
Porcupine: 
McKinlev Creek . . 
16.80 
Members U. S. Geological Survey. 
Do. 
Porcupine Creek 
17.20 
Nizina: 
Chittitu Creek 
18.71 
Operator. 
Dan Creek 
18.87 
Do. 
Chisna: 
Miller Gulch 
18.41 
18.47 
Do. 
Slate Creek 
Do. 
Headwaters of Copper River 
17.80 
Do. 
Sunrise: 
Sixmile Creek 
17. 34 
Members U. S. Geological Survey. 
Do. 
Crow Creek 
14.80 
Atlin: 
Pine Creek 
16.43 
Operator. 
Do. 
Willow Creek 
15.65 
Spruce Creek 
16. 50 
Do. 
McKee Creek 
17.31 
16.23 
16. 00 
Do. 
Birch Creek 
Do. 
Gold Run 
Do. 
Klondike: 
Bonanza Creek: 
(a ) High bench 
15.28 
Bank British North America. 
( b ) Creek 
16.43 
Do. 
