ATI Hot Roll Processing Facility Brackenridge, Pennsylvania 128 each – 1180mm Shafts 62’ Overburden Depth, 22’ in sandstone/siltstone bedrock – Total length = 84’ Final Exposed secant height = 36’ Case Foundation Company was selected by Allegheny Ludlum Corporation to construct an underground retaining structure used for the collection of Scale resulting from the hot roll processing of steel at their Brackenridge PA facility. This

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