-
hammer drills, and
these drills are
generally used for
holes of 19 mm (3/4 inch) or
greater in size. A
typical application for a
rotary hammer drill is boring...
- drill) or
within the hole (down-the-hole
drill, DTH).
Drills used for
horizontal drilling are
called drifter drills. In rare cases, specially-shaped bits...
- "
Drill, baby,
drill!" was a 2008
Republican campaign slogan first used at the 2008
Republican National Convention by
former Maryland Lieutenant Governor...
-
Driller may
refer to:
Driller (oil), a job in the oil
industry Driller (video game), a 1987 game for
various 8- and 16-bit home
microcomputers The Driller...
-
hosted regions to
extract bulk
samples of the ore.
Churn drills are also
called percussion drills, as they
function by
lifting and
dropping a
heavy chisel-like...
- A
drifter drill,
sometimes called a rock
drill, is a tool used in
mining and
civil engineering to
drill into rock. Rock
drills are used for
making holes...
- A
drilling rig is an
integrated system that
drills wells, such as oil or
water wells, or
holes for
piling and
other construction purposes, into the earth's...
- and
rotary drilling, a
method often used in
mineral exploration for rock
drilling. In the 1940s,
thermal drills began to be used;
these drills melt the...
- 4 mm)
electric hammer drill (cam-action). Hand-cranked
percussion drills were made in the UK in the mid-twentieth century.
Hammer drills have a cam-action...
-
schools conduct 2 fire
drills per month.
Under later requirements, one of the 2 fire
drills was
replaced by a
monthly security drill. The
National Union...