HUNTINGTON, W.Va. -- An Ohio man pleaded guilty to distributing pounds of marijuana to low-level dealers in Putnam and Kanawha counties on Tuesday. Robin Earl Slater, 51, of Langsville, Ohio, pleaded guilty to federal charges of conspiracy to distribute 100 kilograms of marijuana, possession of a firearm in commission of a felony, being a convicted felon in possession of a firearm and obstruction of justice, U.S. Attorney Booth Goodwin said in a news release. On Jan. 23, 2012, State Police followed Slater onto a St. Albans parking lot after he allegedly committed several traffic violations. While attempting to flee, Slater allegedly bit a trooper on the arm and pepper-sprayed him. Police later discovered more than $24,000, six firearms and drug ledgers inside Slater's house, according to the release. Slater faces a mandatory minimum of 15 years in prison and up to life in prison when he is sentenced on Nov. 18 by Chief U.S. District Judge Robert C. Chambers. Slater has two prior felony drug convictions related to the distribution of marijuana.