Captured key storage device for effective lockout of large equipment. Effective alternative to requiring each authorized lockout team member to place one of their personal safety locks at every lockout point in the system. The Group Lock Box allows for each lockout point to be secured with just one designated lock. The accompanying keys are then captured by placing them in the Group Lock Box. Each authorized employee locks just one personal safety lock onto the box. Up to 12 workers can apply their personal safety locks. Heavy duty steel construction. Red lockout color identifies the safety lockout application.