Transite was the material used in manufacturing asbestos wallboard. This was a mix between Portland cement and asbestos fibers. It was done in order for the product to be light but durable.
Wallboard wasn’t hazardous in intact form but as it begun to deteriorate, the microscopic asbestos fibers would become airborne. This was a product that required cutting to size or sanding when it was first installed and demolishing by applying brute force to it when the time came for wallboard to be removed. All these actions would result in huge amounts of poisonous dust. You could have been exposed if: