R. Meyer J. Köhler A. Homburg Explosives

Seismograph
prospecting. The explosive can be supplied in sort plastic cartridges
and in rigid plastic tubes threaded for coupling.
density of cartridge: 1.6 g/cm3 weight strength: 90%
detonation velocity at cartridge density,
unconfined: 6000 m/s
Seismograph
An instrument, useful in blasting operations, which records ground
vibration. Particle velocity, displacement, or acceleration are generally
measured and recorded in three mutually perpendicular directions.
Seismometer, Falling Pin
An instrument used to indicate relative intensity of ground vibration. It
consists of a level glass plate on which a series of 1//4c diameter steel
pins (6c to 15c lengths) stand upright inside of metal tubes. The use of
the falling pin seismometer is based on the theory that the length of
the pin toppled depends upon the amount of ground vibration present.
Seismoplast 1
Trade name of a plastic, water-resistant cap-sensitive explosive used
for seismic exploration under extreme conditions such as pressures up
to 500 bar and temperatures as low as – 40 °C. Manufactured and
distributed by Orica Germany GmbH.
density: 1.54 g/cm3 weight strength: 75%
detonation
velocity, unconfined: 7250 m/sec.
Semiconductor Bridge (SCB) Igniter
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A solid-state device that when driven with a low-energy current pulse,
produces a plasma discharge that ignites energetic materials pressed
against the SCB. A micro convective process transfers the plasma’s
energy into the explosive causing ignition in a few tens of microseconds.
The SCB consists of a small polysilicon volume formed on a
silicon substrate; typical bridge dimensions are 100 mm long by