Laserfiche WebLink
• 9.0 MONITORING <br />Some surface monuments already exist above the areas that will be <br />affected by subsidence from retreat mining. These points should <br />be monitored at regular intervals prior to, during and after all <br />retreat mining until the associated subsidence is complete in <br />order to verify assumptions made and conclusions drawn in this <br />study. We would also strongly recommend visual inspection of the <br />surface above areas to be subsided in order to further <br />substantiate or refute the conclusions of this study. <br />• <br />• <br />28 <br />