Efficiency Production, Inc.

Jeff Griffin, Senior Editor

For excavation projects requiring manned entry, shielding and shoring trench walls is a major cost. Material and labor prices escalate as excavations cover more area and become deeper. On many large projects -- especially long runs of large-diameter pipe installation -- slide rail systems have become the preferred method of preventing the collapse of trench walls.

Evans Construction Co. of Jackson, WY, recently installed a new eight-foot diameter lift station in the suburbs near Jackson Hole.

The Central Weber (Utah) Sewer Improvement District recently awarded a project installing a new treated water discharge line from the treatment plant to the Weber River to Whitaker Construction Company.

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