In addition to being an ANFO mix truck, these units
can also manufacture
heavy ANFO, which is the addition of emulsion to the ANFO mixture. The units are permanently fixed to the cab chassis or can be modular depending on customer requirements.
These designs consist of an Ammonium Nitrate storage bin, Emulsion storage tank and process fuel oil tank. Product
is discharged using either an overhead discharge auger or side-mounted auger. Emulsion is generally added to the ANFO in the discharge auger.
Electronic controls are placed in the cabin of the unit which allow the
unit to be operated by a single person. Like ANFO mix units, these controls allow batch and total amounts to be recorded. Specialised controllers can also provide ingredient percentages and individual ingredient rates. It also allows different mixtures of ANFO and
heavy ANFO to be loaded into the blast hole without the need to adjust the
control settings.
Total bin capacities range from 4-20 tonnes (8816 lbs - 44080 lbs), with discharge rates from 50kgs (110 lbs) - 1200kgs (2645 lbs) per minute. However weight restrictions of the cab chassis is the main limiting factor to the size of the unit.
