•Ensures proportioning and mixing of the shotcrete mixture materials and maintaining and cleaning the mixing equipment
•Stores, cares, and ensures accessibility of the materials
•Ensure the mixture is free of contaminated materials and debris and that the aggregates have the proper moisture content.
•Maintains a constant flow of shotcrete materials without mixing more material than can be used within the specified time limits.
•Supervises the workers who are supplying and loading the mixer.