The overburden stripping is the removal of the overburden of the coal. The stripping overburden of coal mining on the site of PT AAP has an inconsistency at the end of each month. Re-planning is needed to achieve the annual production target of PT AAP with Stripping Ratio 4.1. In 30 days of October 2019, 696 hours, there are holidays on Fridays and operating delays. The availability factor of e…