HAZELWOOD, MO – September 14, 2026 (STL.News) A family-owned St. Louis-area mechanical contractor with roots extending back more than 70 years is preparing for a major expansion in Hazelwood that is expected to bring a $40 million investment, a massive new headquarters and 105 additional jobs to the region. Jarrell Contracting plans to build a 191,000-square-foot headquarters and operations center in Hazelwood, consolidating administrative offices, fabrication operations, warehousing, employee training and field support at one location. The Missouri Department of Economic Development announced the expansion Sept. 2, saying the project will create 105 new jobs with an average wage
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