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How We Mine Clay
The future of any mining company is dependent upon its raw material reserves. The only way to identify these reserves is through drilling. At Spinks, we have always recognized the need for insuring the consistency of our products over time. Maintaining a solid drilling program has helped maintain this consistency and is the reason we can assure current and future customers of the consistency of our products well into the future.
Because Spinks recognizes that drilling and a strong reserve identification program is paramount for our future , we wanted to give you a little background on our drilling philosophy.
It all begins with site selection. Spinks has control of the clay reserves under approximately 25,000 acres of land, so this selection is not a trivial task. Once a property has been selected, a grid is laid across the property in 150-foot squares. Each point on this grid is drilled. If clay is present, samples are taken every two to three feet. If there is an obvious change in the clay, then the sample may be smaller. These samples are sent to one of our research and development laboratories for testing and evaluation. Maps are prepared from surveys of the drill holes and three-dimensional computer models of the deposit are made. If the deposit is to be mined, dirt will eventually be removed from the top of the clay and the drill holes re-spotted. The drill rig is then brought back to fill in the current drilling grid so that the squares are reduced from 150 to 75-foot centers. Having holes every 75 feet within a mine greatly decreases the chance of being surprised by an unexpected change in the composition of the deposit.