Denver-based Summit Materials Inc. has acquired LeGrand Johnson Construction Co., serving northern and central Utah, western Wyoming and southern Idaho through four ready mixed concrete, five sand & gravel and five asphalt plants. The Logan, Utah, operator becomes the 12th brand integrated with Kilgore Companies, an Intermountain platform launched in 2009 and now spanning upwards of 20 ready mixed and 20 aggregate sites, plus newer asphalt capacity.
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