ST. JOHNS, Mich (WLMI)  Felony drug charges leveled against two Grand Ledge men in connection with a Monday night meth lab explosion.  55-year old Michael Kelly and 20-year old James Eimer are charged with maintaining a meth house and conspiracy to manufacture and deliver meth.  The men were arrested following the explosion inside a Watertown Township mobile home.  Police are looking for a third suspect who fled the scene.