St. Louis County board approves pilot chip-seal project using taconite tailings
The board approved a bid award to GE Asphalt Systems for a pilot seal-coat project that will use locally sourced taconite gradations and a new oil formulation; staff said the pilot ties to university and state research seeking FHWA approval as an alternative to bauxite.
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St. Louis County commissioners approved a pilot seal-coat contract to GE Asphalt Systems for multiple county and state-aid roadways, a county staff member said during the meeting. The project will use taconite tailings graded on the Iron Range and a different type of oil in a limited application to test performance.
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