Open cut mining in Australian is over 40 years old. Open cut mining Sale on you can have all the colors of unique rare gemstone from around the world in one jewelry design. “Graham offers clients free of charge when purchasing stones over $191 free” His goldsmith will hand make 1 design jewelry to suit the gemstone purchased, include free insurance and postage to your home. Yes,we are open cut mine and design jewelry using opals in the design, open cut mining opal miners have used this method along with conventional shaft and tunneling methods on the gem fields looking for many types of stones. The State of South Australian has white opals, the state of N.S.W has black stones and in Queensland boulder stones . Open cut method of mining is only under taken if it is no longer safe to work underground, the claim must have been a very productive claim producing large amount of valuable gemstones, investors and miners do not want to under take such a expensive mining procedure such as open cut if not needed . Conventional underground mining is the less expensive method of mining . Open cut mining in Australian is over 40 years old. Open cut opal mining ,have to remove large amount of over burden this is where it becomes expensive,soil and iron stone is removed from the surface of the old lease, then huge amounts of clay is removed usually to a depth of about 5 to 6 m around Lightning Ridge. Processing and washing the bearing levels begins most of the gemstones are found in the sandstone roof of the old drives at the top as the first miners found it hard work and difficult digging by hand in the sandstone roof . Opal also was found in the soft clay walls under the sandstone roof and often in opals seen formation on the floor of the shafts. Custom opal engagement rings. Working under ground on a claim is great if you can afford about a 8 tone backhoe front loader also a four-wheel-drive pickup utility is very handy to go back and forward to town where you must have a 200 gallon diesel fuel tank mounted for refueling each day as large machinery on your claim will use a lot of fuel. No problem there is a good subsidy no tax on diesel where you have a yearly rebate a direct debit into your bank account. If finances are not a problem I would suggest the mining method of using a very powerful blower to suck and remove clay into a dual axle diesel truck, allowing one to be filled on the claim,the other is going to processing plant. Purchase a large 9 yard diesel agitator with hydraulic overhead belt to be used as your opal processing...
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