At approximately 10:55AM two employees reported to their immediate supervisor that they were stuck in the K3 elevator between the 5th & 6th floors. Executive Elevator was notified at 11:08AM and arrived onsite at 1:00PM. MSHA notified at 11:25AM (ref # 04688756). At approx. 1:28PM employees were released from the K3 elevator. MSHA was contacted again at 1:30PM (ref # 04689063).