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#12 strength and #8 strength refers to the base charge of a detonator.
Historically detonators were made in a range of strengths, #6 for underground coal (Carrick Detonators) and #8 for initiating gelatin dynamite. With the change to less sensitive explosives a stronger detonator was required so ICI / Orica made a #8* which is equivalent to a #12 strength DYNO detonator.
There were also #2, #3, #4 detonators but these were for testing the sensitivity of explosives and were not used for blasting.
Adjusted Net Explosive Quantity (Adjusted NEQ)
The mass of TNT that would produce an equivalent explosive effect to the inventory under consideration.
AEISG MPU Code
The Australian Explosives Industry Safety Group (AEISG) publishes a number of Codes of Practice for the explosives industry including a code for Mobile Processing Units (MPU's).
Other codes are found at www.aeisg.org.au
A mass of angular volcanic fragments united by heat.
Vibration of the atmosphere due to the release of explosives energy.
ALANFO A mixture of ANFO and aluminium powder. Adding aluminium increases the strength. As aluminium is a fuel a reduced quantity of diesel is required.
Ammonium Nitrate (AN), meeting the requirements of UN1942.
The chemical compound ammonium nitrate, the nitrate of ammonia with the chemical formula NH4NO3, is a white crystalline solid at room temperature and standard pressure. It is commonly used in agriculture as a high-nitrogen fertilizer, and it has also been used as an oxidizing agent in explosives, including improvised explosive devices. It is the main component of ANFO and emulsion explosives which account for over 80% explosives used in Australia.
AN used for ANFO manufacture is referred to as PPAN meaning Porous Prilled Ammonium Nitrate.
Prilled is the term for a small aggregate of a material, most often a dry sphere, formed from a melted liquid
Porous because the prills contain voids to soak up the diesel fuel.
Amperage or Amps provided by an electrical service is the flow rate of "electrical current" that is available.
Basic Formulas Relate Voltage, Current (Amps), & Resistance (Ohms or Ω ), Watts
Voltage = Current x Resistance
Current = Voltage / Resistance
Resistance = Voltage / Current
Watts = Volts x Amp
An ammonium nitrate based emulsion, suspension or gel which meets the requirements of UN3375 under the UN (United Nations) classification system.