Mykal Caskey Accepts Phlebotomy Instructor Position at BRTC Home » Home » Mykal Caskey Accepts Phlebotomy Instructor Position at BRTC Black River Technical College is pleased to announce Mykal Caskey of Jonesboro has accepted the position of Phlebotomy Instructor. Caskey earned a Certificate of Proficiency in Phlebotomy from Arkansas State University-Jonesboro.