Back in the day I was a cabling contractor. While cuts and scrapes were almost a daily thing, you dare not bleed on the customer's premises. If you sliced something open with a hook knife or on some sharp metal it was an immediate reach to the back pocket where every cabler had a roll of electrical tape. A quick wrap and the a trip to the nearest can to see how bad it was. Then maybe some paper toweling and a rewrap with more tape till the bleeding stopped later.
A cablers bandage is electrical tape wrapped around paper toweling. Amazingly effective at stopping the flow of blood since you can use the elasticity of the electrical tape to apply various amounts of pressure as needed.