Task:
In a memo or report format, answer the following questions. Note: make sure all figures are labelled.
1. Include a screen shot of your orebody solid. What are the dimensions of the orebody? Include the height, width and length.
2. Report the volumes from the two volume calculation methods.
3. How many troy ounces of gold are contained in the orebody? What is the average grade of the deposit?
4. How many tons of material are contained in the orebody by 50ft bench levels? Include the average grade by bench. (Create a table)
5. How much is this gold worth at today’s price? (make sure you report what price you use!)
6. How many tons of material and how many ounces would the orebody contain if the density of the deposit was 3.5 g/cm3, what if it were 2.0g/cm3?
7. What is the difference between density, specific gravity, and tonnage factor?
8. If the following costs are assumed, calculate the breakeven and milling cutoff grades.
a. Mining Cost - $4.50 per ton
b. Milling Cost - $195.00 per ore ton
c. Recovery Rate – 92%
d. Gold Price - $1,560 per t.oz
e. Marketing Cost - $20.00 per t. oz
f. Refining Cost - $4.00 per t. oz
9. Do you think this deposit have economic viability? Explain why or why not.
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