30+ years experience batching, with dry batch, central mix, Fastway, super bags, and a volumetric truck, most of which are computer controlled. I have set up plants in Anchorage as well as remote locations such as Kwethluk, Whittier, Sand Point, Kaliganek, New Stuyahok, and Platinum.
Pogo Mine - Use of super bags to batch in remote locations along with water meter get excellent accuracy results.
Kwethluk - Setting up batch plant at Kwethluk for school project.
Anaktuvuk Pass - Small batches need more attention to QC to meet strength requirements, so water, aggregate, and admixes are always carefully measured.