CRANE. | Addenda. 371 
passes to the tailings mill. The speed of both trommels is 20 
revolutions per minute. 
There are two elevators operating in connection with the 
slime department—the dirt elevator, situated without the 
building, is 4x10 feet in plan and 20 feet high, while the bud- 
dle feed stands within the building, and is 3x8 feet in plan 
and 16 feet high. They are bucket elevators, as are all others 
in the plant, with buckets bolted to rubber belting, and are 
driven at a speed of 300 feet per minute. 
The scheme of treatment is as follows : 
Fine tailings and sands by scrapers and shovels to 1. 
1. Dirt elevator No. 1 to 2. 
2. Trommel (jacketed) with 6 and 1 mm. round holes; oversize to 3, 
undersize to 4. 
3. One pair No. 1 rolls, 20x12 inches, set ;; inch apart, to 5. 
4, Trommel with ? mm. round holes; oversize to 3, undersize to 15. 
Tailings dumped on grizzly to la. 
la. Dirt elevator No. 2 to 2a. 
2a. Shaking screen with ? mm. round holes; oversize to 3, undersize 
to 3a. 
3a. Elevator (slime feed) to 15. 
5. Elevator (jig feed) to 6. 
6. One 6 sieve (modified) Harz jig; discharge to 7, hutches to 8, and 
tailings to 9. 
7. Elevator (chats) to 10. 
8. Elevator (smittem) to 11. 
9. Elevator (tailings) to waste bank. 
0. Trommel with 1 mm. round holes; oversize to 12, undersize to 6. 
1. One 6 sieve Harz jig; discharge by No. 2 centrifugal pump to 10; 
first hutch to 13, remaining hutches to 14. 
12. One pair No. 2 rolls, 20x12 inches, set close together, to 7. 
13. Galena (finished product) to bin. 
14, Blende (finished product) to bin. 
15. Three buddles, Nos. 1, 2, and 3: No. 1, a 20 foot convex; Nos. 2 
and 3 are 9 foot Emmons buddles; inner 4 from No. 1 to 17; mid- 
dle 4 from No. 1 to 16; outer 4 from No. 1 to waste bank. Product 
from Nos. 2 and 8 to 17. 
16. One 3x12 foot hand buddle; product reworked until fit to go to 19. 
17. One No. 5, 20 foot convex buddle; inner 4 from No. 5 rerun on No. 5, 
inner 2 of which goes to 20, outer 4 of which goes to 19; outer 4 
from No. 5 to No. 5, inner 2 of which goes by elevator to 18, the 
remaining 4 of which goes to 19. 
18. One No. 4, 7 foot Emmons buddle to 16 and 17. 
19. Two Wilfley tables; concentrates to 20, overflow to No. 1, 15. 
20. Finished product to ore bin. 
The minerals treated by this mill are varied, and come from 
