Core drilling setup on D7 and D8

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  Core drilling machine setup

  Visual Materials

  Core drilling machine setup on D-1 Dam 1. Taken from above and left of machine.

  photCL SCE 02 - 20154

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  Core drilling machine setup

  Visual Materials

  Core machine setup on hole D-13 Dam #1.

  photCL SCE 02 - 20153

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  Core drilling machine setup

  Visual Materials

  Core machine setup hole d-1 Dam #1.

  photCL SCE 02 - 20151

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  Machine set up for drilling core hole

  Visual Materials

  Machine set up for drilling core hole d-1 downstream face Dam 1, station 9+78.5, elevation 6812.4.

  photCL SCE 02 - 20150

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  Showing upstream core drill hole 2-1, Dam 2, and drilling scaffold on hole 2-2

  Visual Materials

  Showing upstream core drill hole 2-1, Dam 2, and drilling scaffold on hole 2-2.

  photCL SCE 02 - 20148

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  Upstream face Dam 1, showing condition of concrete in vicinity of core-drill hole U-2 prior to drilling

  Visual Materials

  Upstream face Dam 1, showing condition of concrete in vicinity of core-drill hole U-2 prior to drilling.

  photCL SCE 02 - 20103