Operations & Maintenance -Refresher View cart “Allied Trades – Refresher” has been added to your cart. $120.00 Operations & Maintenance -Refresher quantity Add to cart Category: Uncategorized Related products Project Designer – Refresher $200.00 Add to cart Contractor / Supervisor – Initial $600.00 Add to cart Project Monitor – Refresher $170.00 Add to cart Project Monitor – Refresher $170.00 Add to cart