MCS of devices on table, gloved hand turning know lowering measuring tube. ECU sequence showing vial being adjusted in clamp, radioactive substance being placed in vial, of gloved hand adjusting knob of clamp, of measuring tube taking liquid from beaker, substance being droped from measuring tube onto glass slab. MS and CS of woman technician handling testing devices. HACS of technician measuring radioactivity of substance using testing device. CS of technician's hand adjusting vial to testing device. MCS of man's hand pushing button, TILT UP to conveyor carrying lead container.