October 28, 2021 apprenticeshiptraining, Certification Course, Heavy Equipment Apprentice, Journey Level Training, Maintenance Technician Apprentice, MSHA Training, Safety Classes, Trade Related local18training A requirement of the Mine Training plan is that every MSHA trained Operating Engineer who has taken the 24-hour classand is deemed an experienced miner must attend an annual 8-hour refresher class. Tags: apprenticeship training heavy equipment operator heavyequipmentmechanic journeyleveltraining Maintenance Technician mechanics msha msharefresher safetycourse