1|Page
CHICAGO STATIONARY ENGINEER LICENSURE
EXAMINATION INFORMATION QUESTIONS
AND ANSWERS 2025
Trenching - .....ANSWER ...✔✔ The most inexpensive
method to establish the lateral extent of shallow mineral
deposits.
Burden - .....ANSWER ...✔✔ The distance between the
rows of holes running parallel to the free vertical
surface of the rock.
Zinc - .....ANSWER ...✔✔ The metal used for
galvanizing.
Recovery Ratio - .....ANSWER ...✔✔ Defined as the
volume of mineral mined from a deposit divided by the
total volume of mineral in the deposit prior to mining.
Persistence - .....ANSWER ...✔✔ The perpendicular
distance between two adjacent discontinuities of the
same set in rock mechanics.
,2|Page
Chuquicamata mine - .....ANSWER ...✔✔ The world's
first low-grade, open pit copper mine and the largest
man-made excavation.
Statistics - .....ANSWER ...✔✔ Deals with scientific
methods for collecting, organizing, summarizing,
presenting, and analyzing data.
Dilution - .....ANSWER ...✔✔ Represents the amount of
uneconomic material that must be removed to uncover
one unit of ore in open pit mining.
Point load test - .....ANSWER ...✔✔ A laboratory test
where a piece of rock is held between two conical
platens of a portable lightweight tester.
Saprolite - .....ANSWER ...✔✔ The zone in a typical
nickel laterite profile that contains the highest nickel
percentage.
Fan Laws - .....ANSWER ...✔✔ In Fan Laws, speed
ratio is equal to the ratio of air quantity.
,3|Page
Tunneling - .....ANSWER ...✔✔ Often done to increase
confidence in reserve estimates, even before the deposit
has been explored by drilling.
High-pressure acid leaching process - .....ANSWER
...✔✔ A process through which nickel by-products like
lithium, cadmium, and scandium are produced.
Transparency - .....ANSWER ...✔✔ Requires that a
Public Report is clear and unambiguous, providing
sufficient information to the reader.
Effective Utilization - .....ANSWER ...✔✔ A measure
of efficiency in mining, defined in relation to the
recovery of minerals.
Time for truck loading - .....ANSWER ...✔✔ The time
for a truck to position itself at the shovel and be loaded
is 0.50 minute.
Sustainable development goals - .....ANSWER ...✔✔
There are 17 sustainable development goals.
, 4|Page
Spacing - .....ANSWER ...✔✔ The distance between
two adjacent discontinuities of the same set in rock
mechanics.
Stripping ratio - .....ANSWER ...✔✔ The ratio of
uneconomic material removed to the amount of ore
uncovered in open pit mining.
Mine Call Factor - .....ANSWER ...✔✔ A measure used
in mining to assess the accuracy of ore estimates.
Aperture - .....ANSWER ...✔✔ The distance between
two adjacent discontinuities of the same set in rock
mechanics.
UCS Test - .....ANSWER ...✔✔ A laboratory test used
to determine the unconfined compressive strength of
rock.
Diamond Drilling - .....ANSWER ...✔✔ A method used
to establish the lateral extent of mineral deposits, but is
not the most inexpensive.
CHICAGO STATIONARY ENGINEER LICENSURE
EXAMINATION INFORMATION QUESTIONS
AND ANSWERS 2025
Trenching - .....ANSWER ...✔✔ The most inexpensive
method to establish the lateral extent of shallow mineral
deposits.
Burden - .....ANSWER ...✔✔ The distance between the
rows of holes running parallel to the free vertical
surface of the rock.
Zinc - .....ANSWER ...✔✔ The metal used for
galvanizing.
Recovery Ratio - .....ANSWER ...✔✔ Defined as the
volume of mineral mined from a deposit divided by the
total volume of mineral in the deposit prior to mining.
Persistence - .....ANSWER ...✔✔ The perpendicular
distance between two adjacent discontinuities of the
same set in rock mechanics.
,2|Page
Chuquicamata mine - .....ANSWER ...✔✔ The world's
first low-grade, open pit copper mine and the largest
man-made excavation.
Statistics - .....ANSWER ...✔✔ Deals with scientific
methods for collecting, organizing, summarizing,
presenting, and analyzing data.
Dilution - .....ANSWER ...✔✔ Represents the amount of
uneconomic material that must be removed to uncover
one unit of ore in open pit mining.
Point load test - .....ANSWER ...✔✔ A laboratory test
where a piece of rock is held between two conical
platens of a portable lightweight tester.
Saprolite - .....ANSWER ...✔✔ The zone in a typical
nickel laterite profile that contains the highest nickel
percentage.
Fan Laws - .....ANSWER ...✔✔ In Fan Laws, speed
ratio is equal to the ratio of air quantity.
,3|Page
Tunneling - .....ANSWER ...✔✔ Often done to increase
confidence in reserve estimates, even before the deposit
has been explored by drilling.
High-pressure acid leaching process - .....ANSWER
...✔✔ A process through which nickel by-products like
lithium, cadmium, and scandium are produced.
Transparency - .....ANSWER ...✔✔ Requires that a
Public Report is clear and unambiguous, providing
sufficient information to the reader.
Effective Utilization - .....ANSWER ...✔✔ A measure
of efficiency in mining, defined in relation to the
recovery of minerals.
Time for truck loading - .....ANSWER ...✔✔ The time
for a truck to position itself at the shovel and be loaded
is 0.50 minute.
Sustainable development goals - .....ANSWER ...✔✔
There are 17 sustainable development goals.
, 4|Page
Spacing - .....ANSWER ...✔✔ The distance between
two adjacent discontinuities of the same set in rock
mechanics.
Stripping ratio - .....ANSWER ...✔✔ The ratio of
uneconomic material removed to the amount of ore
uncovered in open pit mining.
Mine Call Factor - .....ANSWER ...✔✔ A measure used
in mining to assess the accuracy of ore estimates.
Aperture - .....ANSWER ...✔✔ The distance between
two adjacent discontinuities of the same set in rock
mechanics.
UCS Test - .....ANSWER ...✔✔ A laboratory test used
to determine the unconfined compressive strength of
rock.
Diamond Drilling - .....ANSWER ...✔✔ A method used
to establish the lateral extent of mineral deposits, but is
not the most inexpensive.
