The U.S. Army Corps of Engineers is building a wetland habitat in East Oak Cliff to help with Trinity River flood control. The corps has to take precautions to avoid gigantic underground utility pipelines. These workers are using a vacuum truck to excavate an exploratory hole. “The maps showing underground utility maps are old, and digging the holes helps verify their location with precision,” says spokesman Jim Frisinger.
Picture day: Digging a big hole
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