Surface Mining 2 || 100% Errorless Answers.
1. It is defined as the ratio of overburden to ore at the ultimate boundary of the pit where the
profit margin is zero.
a. Maximum Allowable Break-Even Ratio
b. Maximum Allowable Stripping Ratio
c. Maximum Allowable Ultimate Boundary
d. Maximum Allowable Pit Limit correct answers b
2. A mining method that requires many benches and resembles a (roughly) circular pyramid,
inverted in the earth, each successive bench being cut to a smaller radius because of the slope
imposed by safety considerations.
a. Underground Mining
b. Glory Hole Mining
c. Placer Mining
d. Open Pit Mining correct answers d
3. Volume of overburden/weight of ore for entire ore body or cross-section.
a. Overall Stripping Ratio
b. Maximum Allowable Stripping Ratio
c. Maximum Allowable Pit Limit
d. Overall Cross-Section correct answers a
4. The initial entry or a wedge-shaped prism of rock which must be removed to establish a new
bench face in Open Pit Mining
a. Triangle Cut or Three-Sided Cut
b. Box Cut or Drop Cut
c. Diamond Cut
d. Baguette Cut correct answers b
5. Refers to removing overburden external to the mineral deposit and removing waste within the
confines of the open pit.
a. Stripping
b. Mining
c. Ore Blocking
d. Kriging correct answers a
6. Volume of overburden/weight of ore at economic pit limit
a. Overall Stripping ratio
b. Maximum Allowable Stripping Ratio
c. Pit Limit
d. w : o correct answers b
7. It is the process of obtaining useful minerals from the earth's crust and includes both
underground excavations and surface workings.
a. Mining
, b. Quarrying
c. Stripping
d. Excavating correct answers a
8. Means searching for ore
a. Krigging
b. Reconnaissance
c. Prospecting
d. Development correct answers c
9. In only one instance does Srmax not establish the pit limit or exceed SRo in magnitude, and
that occurs when
a. the deposit is flat, tabular and of constant thickness
b. the surface is flat
c. both a and b
d. none of the above correct answers c
10. It is the work of driving openings to and in a proved ore body to prepare it for mining and
transporting the ore.
a. Development
b. Production
c. Exploration
d. Haulage correct answers a
11. It is a mineral property, the value of which has not been proved by exploration.
a. Prospect
b. Ore
c. Outcrop
d. Overburden correct answers a
12. Sometimes referred to as open cut mining that can be employed in any mineral deposit in any
rock type lying near or on the surface where the excavation is open to the sky and weather.
a. Placer Mining
b. Open Pit Mining
c. Underground Mining
d. Quarrying correct answers b
13. It is the work involved in gaining a knowledge of the size, shape, position and value of an ore
body.
a. Reconnaisance
b. Prospecting
c. Exploration
d. Kriging correct answers c
14. In an open pit mine a bench forms a single level of operation above which minerals and
waste materials are excavated from the bench face.
1. It is defined as the ratio of overburden to ore at the ultimate boundary of the pit where the
profit margin is zero.
a. Maximum Allowable Break-Even Ratio
b. Maximum Allowable Stripping Ratio
c. Maximum Allowable Ultimate Boundary
d. Maximum Allowable Pit Limit correct answers b
2. A mining method that requires many benches and resembles a (roughly) circular pyramid,
inverted in the earth, each successive bench being cut to a smaller radius because of the slope
imposed by safety considerations.
a. Underground Mining
b. Glory Hole Mining
c. Placer Mining
d. Open Pit Mining correct answers d
3. Volume of overburden/weight of ore for entire ore body or cross-section.
a. Overall Stripping Ratio
b. Maximum Allowable Stripping Ratio
c. Maximum Allowable Pit Limit
d. Overall Cross-Section correct answers a
4. The initial entry or a wedge-shaped prism of rock which must be removed to establish a new
bench face in Open Pit Mining
a. Triangle Cut or Three-Sided Cut
b. Box Cut or Drop Cut
c. Diamond Cut
d. Baguette Cut correct answers b
5. Refers to removing overburden external to the mineral deposit and removing waste within the
confines of the open pit.
a. Stripping
b. Mining
c. Ore Blocking
d. Kriging correct answers a
6. Volume of overburden/weight of ore at economic pit limit
a. Overall Stripping ratio
b. Maximum Allowable Stripping Ratio
c. Pit Limit
d. w : o correct answers b
7. It is the process of obtaining useful minerals from the earth's crust and includes both
underground excavations and surface workings.
a. Mining
, b. Quarrying
c. Stripping
d. Excavating correct answers a
8. Means searching for ore
a. Krigging
b. Reconnaissance
c. Prospecting
d. Development correct answers c
9. In only one instance does Srmax not establish the pit limit or exceed SRo in magnitude, and
that occurs when
a. the deposit is flat, tabular and of constant thickness
b. the surface is flat
c. both a and b
d. none of the above correct answers c
10. It is the work of driving openings to and in a proved ore body to prepare it for mining and
transporting the ore.
a. Development
b. Production
c. Exploration
d. Haulage correct answers a
11. It is a mineral property, the value of which has not been proved by exploration.
a. Prospect
b. Ore
c. Outcrop
d. Overburden correct answers a
12. Sometimes referred to as open cut mining that can be employed in any mineral deposit in any
rock type lying near or on the surface where the excavation is open to the sky and weather.
a. Placer Mining
b. Open Pit Mining
c. Underground Mining
d. Quarrying correct answers b
13. It is the work involved in gaining a knowledge of the size, shape, position and value of an ore
body.
a. Reconnaisance
b. Prospecting
c. Exploration
d. Kriging correct answers c
14. In an open pit mine a bench forms a single level of operation above which minerals and
waste materials are excavated from the bench face.
