10-72.
Improper feed pressure results
in poor penetration rates and
shortens the life of which of
the following components?
1.
The feed chain
2.
The rod
3.
The sleeve and shank
4.
All of the above
10-73.
The drill steel should be rotated
or changed after drilling what
maximum number of boreholes?
1.
One
2.
TWO
3.
Three
4.
Four
10-74.
Safety guidelines for rock drill
operations are outlined in what
U.S. Army manual?
1.
EN 5478
2.
EN 5258
3.
TM 5-331
4.
EM 385-1-1
10-75.
Visitors to rock drill operations,
unless suited properly with all
required safety gear, must stay
clear at a distance of what
minimum distance?
1.
25 feet
2.
50 feet
3.
75 feet
4.
100 feet
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