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Generally the slopes of the mine will be mined at a one to one <br />slope. An excess of overburden and waste materials will be used to <br />back fill the slope to the final three to one configuration. The <br />exceptions to this rule is when the final slope of the mine is <br />coincidental where the wetland. Here the side slopes will be mine <br />at a three to one configuration, thus avoiding the filling of any <br />wetland site. <br />