Laserfiche WebLink
Pitch Reclamation Project Colorado Mined Land Reclamation Board — 2016 Annual Reclamation Report <br /> 3.5.2 South Mine Area <br /> In 2015, the east wall of the South Mine area was inspected and additional slope displacement was noted. <br /> Some of the monitoring points had displacement of about eight ft during the 2015 to 2016 monitoring period. <br /> Tension cracks redeveloped showing both vertical and horizontal offsets as presented in Photograph 9. <br /> The total displacement of the tension cracks was on the order 1 to 2 ft.The heavy precipitation in late spring <br /> is the likely the cause of the accelerated slope displacement and related tension crack development. The <br /> area would have been regraded in 2015, but late season precipitation and equipment failure prevented it <br /> from being accomplished. In 2016, these cracks were graded closed, positive drainage of the bench was <br /> re-established, and a lower bench was added to the slope, as shown in Photograph 10. <br /> r � <br /> tit <br /> r i g,I• � '•5�`4- i Y, - ,� •, .. �„�r`r�. +.. tea 1P ;.� 1 <br /> i a )!.`4 .,^ 1 1. �, 1 y � 'cam �!" •�F 'r,,, �j-�� � ��_, <br /> c - ...` Q;.. ,Yt Al �h l P�}) <br /> Photograph 9: Tension Cracks Redeveloped in 2015 in the East Wall of South Mine Area <br /> low <br /> .::.•+!' '�'"-`�_ war rs ��. �M. .r^-.. _ ,,,,.„ .. '�' <br /> 5 <br /> X <br /> Photograph 10: East Wall of South Mine Area following Repair Work in 2016 <br /> 9 <br />