Operations & Maintenance -Refresher View cart “Worker / Handler – Refresher” has been added to your cart. $120.00 Operations & Maintenance -Refresher quantity Add to cart Category: Uncategorized Related products Project Designer – Initial $550.00 Add to cart Project Monitor – Initial $650.00 Add to cart Management Planner – Refresher $150.00 Add to cart Air Sampling Technician – Refresher $120.00 Add to cart