Digging a hole seems easy to most, I suppose, but what lies below may give you more of a headache than you think. Buried below may be water lines, electrical lines, sewage lines, gas lines, phone lines, and cable lines, just to name a few. You may think that digging by hand would surely be a safer method than digging with a backhoe or something, but it can be just as deadly to the operator of the shovel.
...Source: http://electrical.about.com/b/2013/07/23/dont-dig-until-you-call-811.htm
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