Hardin resident Cody Michael Beard, 21, pleaded not guilty Thursday to federal drug charges.
Beard is charged with conspiracy to distribute meth in 2009 and 2010 in Hardin and on the Crow Reservation.
If convicted, Beard faces a minimum mandatory 10 years in prison and a maximum $4 million fine.
U.S. Magistrate Judge Carolyn Ostby ordered Beard to remain in custody. The case will be heard by Chief U.S. District Judge Richard Cebull.