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Lesson 9 Microsoft Word Document
Task/ Quiz 9 Download this to have
this assignment in a Microsoft Word Document that you can edit. 1. Read Placer Gold Mining in Alaska. In your own words, explain what the USGS felt was the effects of suction dredging on the Forty Mile Mining District in 1997. http://geology.cr.usgs.gov/pub/fact-sheets/fs-0155-97/fs-0155-97.pdf 2. Read Certain Mining Operations Have Not Hurt Pristine Alaskan River. What was Warren Day's, a USGS research geologist from Denver, Colo. conclusion of the data collected in the above study. How did dredging effect the turbidity of the Forty Mile River ? (more info on turbidity http://www.omega.com/techref/ph-6.html ) How long did they feel the dredge piles will remain in the rivers being dredged? 4.Read Time Saving Tips for Prospective Gold Seekers- Plan a trip to do some prospecting in Alaska. When is the best season to approach your ideal prospect? Where is it located? Why did you choose the spot? List equipment you would take for prospecting: Who would you need to contact to find out if you can prospect in the area you have chosen? What permit is suggested for more involved operations? How would you travel? Example: Would you need to have a boat, plane, 4 wheeler, or a track rig? How would you get your supplies and gear to the site?
5. When designing a strip mine, how does geography of the mine area effect the plan and the method of the mining? Explain
6. What would need to be considered in designing the pit lay out? Why?
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