Joan Manuel Bruach Menchén is the laboratory technician of the Environmental Radioactivity Laboratory. With a background in Physics and more than 2 decades working in this laboratory, he performs most of the radiochemistry procedures needed to measure radioactive isotopes (e.g. 210Po, Uranium, Thorium) and takes care of the many detectors available (e.g. the Alpha and Gamma Spectrometers, Quantulus 1220, RaDeCC, Beta Counter).