Foresight, owned by billionaire Chris Cline and ranked as the top Illinois coal producer, will have 17.5 million units in the IPO, representing a 13.5% limited partner interest. They will be priced between $19 and $21.

Company officials anticipate total net proceeds from the offering of $323.3 million.

It also intends to grant underwriters a 30-day option to purchase up to an additional 2,625,000 common units to cover over-allotments, if any.

Barclays, Citigroup, Morgan Stanley, J.P. Morgan, Goldman, Sachs & Co. and Deutsche Bank Securities are serving as the offering’s joint book-runners. Stifel, Credit Agricole CIB, PNC Capital Markets LLC and Huntington Investment Company are co-managers.

Foresight has a combined 3 billion tons of coal reserves currently supporting its four mining complexes including Macoupin, Hillsboro, Sugar Camp and Williamson.