PURINGTON.] 
28. 
(a) 
(b) 
(c) 
29. 
(a) 
(6) 
30. 
(a) 
(b) 
31. 
(a) 
(b) 
FORMS SENT TO MINERS. 19 
Is gold smooth or rough? 
Rusty or bright? 
Flat or chunky? 
Does nature of gold vary from grass roots to pay or in different parts of the 
pay streak? 
If so, in what way? Please describe. 
What amount of black sand is caught per cubic yard of gravel washed? 
What amount of other materials? 
Are other valuable minerals caught besides gold? 
If so, what are they and in what amount? 
V2. Under which of the following heads do your operations come, and will you 
briefly describe the important features? (Operations: tundra, beach, creek, 
or bench mining. ) 
53. How many cubic yards of gravel are washed per day during the season? 
54. How many cubic yards of overburden are stripped during the season? 
PROSPECTING GROUND. 
1. («) Has ground been prospected by pits or by drill holes? 
(b) If by pits, what was the size and depth? 
2. (a) How many were dug? 
(6) What did they cost? 
3. (a) Did they need timbering? 
(b) If so, how closely and how heavily? 
4. If ground was prospected by drilling, what size, depth, and number of holes 
were used? 
5. (a) What was the cost per foot? 
(6) What was the cost of equipment? 
6. What difficulties were encountered? 
7. How did the results from mining compare with the probable results as indi- 
cated by prospecting? 
HYDRAULIC OPERATIONS AND EQUIPMENT. 
1. How much water is used, and how is it distributed in the operations? 
2. What is the length, capacity, and grade of ditches, and head and tail flumes? 
3. What is the length and size of pipe lines, and of what is pipe made? 
4. Will you kindly describe giants, as to size, make, capacity, effectiveness, etc.? 
5. How are bowlders handled? 
6. What and how much material is consumed, such as lumber, quicksilver, 
powder, etc.? 
7. What is the effectiveness of a giant upon frozen gravel? 
8. How much gravel is moved in 24 hours, and what does it cost? 
9. Are elevators used, and if so, what has been your experience with them? 
10. How much water do they use? 
11. Of whose make are they, and will you kindly describe them? 
12. How large stones will they handle? 
DREDGING. 
[Note.— If blueprints or photographs are furnished, they will be returned if desired.] 
1. Will you kindly give a general description of dredge: Maker, type, size, esti- 
mated capacity, cost, and some details of construction; especially of new 
features that have proved advantageous. 
2. How are bowlders handled? 
