Ausvac Mining Pty Ltd, Company based in Western Australia (WA), since 2003 has been specialising in underground mine floor material recovery with a truly Mobile Underground Supersucker – a giant mobile vacuum cleaner, the machine designed and built in Kalgoorlie in WA.
The Director/Owner of the Company Krzysztof (Kris) Biegaj has 30 years+ mine managerial experience in various parts of the world (Poland, Russia Kazakhstan and Ghana – 15 years +) and 15 years+ on gold and nickel mines in Australia – mostly underground and also in open pit mining, iron ore included. More recently the Owner/Director referred to above, has been working as Mining Consultant – Business Improvement in Ghana, Russia, Mongolia, Philippines and Australia.
The use of conventional Load Haul Dump (LHD) units and scrapers on an uneven mine floors underground leaves behind a significant portion of metal (or precious stones) contained in the already capitally developed and broken ore stocks. When removing already broken ore with LHDs and scrapers from the mine floors, due to the “milling” effect by LHDs and scrapers, a significant grade increase occurs with the gold and metals landing on the bottom of uneven mine floors. From the Ausvac Mining P/L practical trials experience, the broken ore material normally left behind is up to 0.5 metres thick – i.e. that material is never recovered and hidden by mine management in various “camouflaging” reconciliation factors – i.e. it is purely wasted, when using conventional mining equipment referred to above. The portion of metal or precious stones contained in the conventionally “unrecoverable” floor material is included in the initial calculations of ore reserves to be mined, when a mining project is being evaluated and capital funds are sought for its development.
The underground mine floor vacuuming technology with small semi-mobile/low productivity vacuum cleaners has been successfully introduced and used in South Africa and other countries for many years as a part of a “normal” mining cycle, including vacuuming the gold left behind in the floor cracks in semi-horizontal stoping excavations.
Stationary Supersuckers/giant vacuum cleaners have been successfully used to mine opals in Cobber Pedy Region in South Australia since the late 60-ties of the last century and for the surface shaft sinking in Australia down to 100m+ in depth.
The application of the Ausvac Mining Pty Ltd truly and highly efficient Underground Mobile Supersucker previously not available in Australia (and possibly anywhere in the world), designed and constructed in Kalgoorlie, Western Australia in 2000 – 2003 (and based on South Australian Coober Pedy design), and the development of a mine floor material recovery system through a number of hands-on practical trials on nickel and gold mines in Australia, has now enabled a highly efficient and cost effective reclamation of the “conventionally” unrecoverable material, allowing for a significant additional revenue and enhancement of the return on the invested capital. And highly importantly, a generation of additional tax revenue to the state governments currently not yet in place in Australia.
Up to forty (40) tonnes+ per shift can now be recovered from the mine floor with two (2) operators using one (1) Ausvac Mining P/L Underground Mobile Supersucker. It is not uncommon that the vacuumed mine floor material contains up to three (3) ounces+ of gold. The attached Excel spread-sheet in the Services section of the Ausvac Mining P/L website: www.ausvacmining.com.au (with the current exchange rate, gold and nickel prices), clearly outlines additional extra revenue that can now be generated with very little mine managerial efforts and costs.
Other applications of the Underground Mobile Supersucker are:
- In an alternative access and hoisting system for high-grade low tonnage underground deposits with little capital access development in waste.
- In underground and surface exploration winzing – as the old timers used to do (the machine was originally designed for that purpose).
- In addition to diamond drilling to correctly define the ore bodies prior to the mine design and mining.
- Mining of very narrow and ultra-high grade ore veins.
- Highly efficient clean-downs of underground and surface sumps or inaccessible mill areas normally containing significant grades.
- Surface mineral sands mining.
- Additionally, the Ausvac Mining P/L Mobile Supersucker can also be used on surface on various construction sites, normally inaccessible and inefficiently performed by conventional equipment.
Ausvac Mining will present their latest products and services at this year’s Mines and Money Asia. Register Now!