Published 2024-10-13
Understanding the quality and quantity of a sand and gravel deposit is critical to the success of an aggregates operation. The quality of the material dictates the range of products that can be produced and affects marketability. For instance, higher-quality materials may meet the specifications for high-strength concrete or asphalt, while lower-quality material might only be suitable for general fill or road base. Knowing the quality helps an operator avoid investing time and resources into deposits that may not generate the highest return on investment.
Variability in the grain size of the deposit adds another layer of complexity. If the grain size fluctuates significantly across different sections of the deposit, it may require the use of different types of processing equipment, such as screens, crushers, or washers, to achieve the desired product specifications. If the operation is not set up to handle this variability, it can lead to inefficiencies and overproduction of certain grades of material that are less in demand, ultimately increasing waste and lowering profitability.
Subsurface information is also essential for accurately estimating the mineable volume of the deposit. Drill logs, core samples, and geophysical surveys provide data on the depth and extent of the deposit, as well as any underlying materials that might be uneconomic to mine. Without this information, operators risk overestimating the amount of recoverable material, which can lead to shortfalls in production and financial losses if the actual volume turns out to be smaller than expected.
By thoroughly assessing both the quality and quantity of a sand and gravel deposit, operators can plan their operations more effectively, optimizing equipment selection and production schedules. This ensures that they can meet market demands while minimizing waste and maximizing profitability. Proper upfront investigation also reduces the risk of encountering unforeseen issues during mining, such as running into unproductive material zones or facing unexpected processing challenges due to variability in the deposit.
How Geographic Solutions can help
Geographic Solutions supports aggregate operators, landowners, contractors, and investors with permitting, mapping, reserve modeling, market studies, valuation, and due diligence for pits and quarries in Washington and Oregon.