A Jackson County man has been charged after authorities said he hit another man with a metal pipe, causing more than 10 fractures in the man’s skull. 52 year old Louis Cubbage Jr. of Baldwin, Iowa pleaded not guilty in Iowa District Court of Jackson County to a charge of willful injury causing serious injury. Reports say that authorities were told on July 19th that Sean Haylock of Oxford Junction, Iowa, had been hit on the head with a steel pipe by Cubbage in rural Maquoketa. Witnesses reported Cubbage approached Haylock with a steel pipe behind his back, yelling at Haylock about the installation of a muffler. Haylock was found to have more than 10 fractures in his skull and bleeding on the brain. He was transferred to an Iowa City hospital for further treatment.