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"Powdered dry chemical products for synthetic-based mud were supplied to the rig in bulk bags. These bags are durable and re-usable, constructed from PVC, with reinforced lifting straps for safety. After use, they are returned to the supplier, refilled and returned to the rig for service. Such bulk bags were sent out to the primary manufacturers and suppliers of mud chemicals used by the preferred mud company for the zero-waste trial. This ensured that waste was eliminated at the very start of the supply chain. No re-packaging of additives (leading to waste from temporary packaging materials) occurred. Most companies supplying dry mud materials, located in various parts of the world, had little difficulty adapting to filling bulk bags instead of paper sacks. The filled bulk bags were transported to the rigs by boat and stored appropriately at the rig until they were used. After use, the bags, which take up very little space when emptied, were crane-lifted off the rig for shipment back to shore." |
