California Blasters Test – Questions With
Comprehensive Solutions
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Terms in this set (128)
What is the composition of A.N.F.O? 94% Ammonium Nitrate 6% Fuel Oil
What are some causes of fly rock? Excessive explosives, insufficient stemming material,
angled holes, charges to close to surface
How much explosives can be stored Less than 100 pounds, 50 pounds indoor
in a second class mag? (day box)
Standard Safety fuse burns at which 40 seconds a foot
rate?
All fuses must extend to what length 3 feet
beyond the collar of a blasting hole
What is the maximum number of fuses 12/1 in snow one fuse
a blaster can light at one time?
Barricade a building or structure containing explosives
effectively screened from inhabited buildings,
another magazine by a natural or artificial barricade
of such height that a straight line from the top of any
sidewall of the building containing explosives to the
eave line of any other magazine or inhibited structure
Barricade Natural Natural features of terrain such as hills, or timber of
sufficient density that the surrounding exposures
which require protection cannot be seen from the
magazine when the trees are bare of leaves
, How many milliseconds between 8 milliseconds
blasts to be defined as separate
blasts?
How many feet of det. cord should be 3 feet
left out of a hole
True or False, det cord loses sensitivity True
when wet
True or False, explosive fires should true
not be attempted to extinguish
true or false, primer charges should true
be close to the same size as borehole
How long should you wait after 1 hour
drilling a hole before it is packed with
explosives
Can water gels emit smoke and toxic yes
fumes
True or False, ANFO can combust True
when in contact w/ iron oxides
Who has control over blasting a licensed blaster on site is in complete control
operations
what is the minimum age of anyone 21
requesting a blasters license
type 2 magazine mobile and protable indoor and outdoor magazine
for the storage of high explosive material
A burning safety fuse... burns internally w some smoke and a little melting
well behind the point of burning. it doesnt show
flame or spark as it burns and it should not jump
Comprehensive Solutions
Save
Terms in this set (128)
What is the composition of A.N.F.O? 94% Ammonium Nitrate 6% Fuel Oil
What are some causes of fly rock? Excessive explosives, insufficient stemming material,
angled holes, charges to close to surface
How much explosives can be stored Less than 100 pounds, 50 pounds indoor
in a second class mag? (day box)
Standard Safety fuse burns at which 40 seconds a foot
rate?
All fuses must extend to what length 3 feet
beyond the collar of a blasting hole
What is the maximum number of fuses 12/1 in snow one fuse
a blaster can light at one time?
Barricade a building or structure containing explosives
effectively screened from inhabited buildings,
another magazine by a natural or artificial barricade
of such height that a straight line from the top of any
sidewall of the building containing explosives to the
eave line of any other magazine or inhibited structure
Barricade Natural Natural features of terrain such as hills, or timber of
sufficient density that the surrounding exposures
which require protection cannot be seen from the
magazine when the trees are bare of leaves
, How many milliseconds between 8 milliseconds
blasts to be defined as separate
blasts?
How many feet of det. cord should be 3 feet
left out of a hole
True or False, det cord loses sensitivity True
when wet
True or False, explosive fires should true
not be attempted to extinguish
true or false, primer charges should true
be close to the same size as borehole
How long should you wait after 1 hour
drilling a hole before it is packed with
explosives
Can water gels emit smoke and toxic yes
fumes
True or False, ANFO can combust True
when in contact w/ iron oxides
Who has control over blasting a licensed blaster on site is in complete control
operations
what is the minimum age of anyone 21
requesting a blasters license
type 2 magazine mobile and protable indoor and outdoor magazine
for the storage of high explosive material
A burning safety fuse... burns internally w some smoke and a little melting
well behind the point of burning. it doesnt show
flame or spark as it burns and it should not jump
