THIS LABORATORY GUIDE WAS DEVELOPED FOR AN 80-HOUR COURSE IN INDUSTRIAL RADIOGRAPHY FOR HIGH SCHOOL GRADUATES TRAINING TO BECOME BEGINNING RADIOGRAPHERS. IT IS USED IN CONJUNCTION WITH TWO OTHER VOLUMES--(1) INDUSTRIAL RADIOGRAPHY INSTRUCTOR'S GUIDE, AND (2) INUDSTRIAL RADIOGRAPHY MANUAL. THE PROGRAM WAS DEVELOPED BY A COMMITTEE OF REPRESENTATIVES FROM INDUSTRY, FROM THE U. S. OFFICE OF EDUCATION, AND THE ATOMIC ENERGY COMMISSION. THE EFFORT AROSE OUT OF A CONCERN FOR (1) REDUCING OVEREXPOSURE HAZARDS TO RADIOGRAPHERS, AND (2) INCREASING THE AVAILABILITY OF MANPOWER IN THIS FIELD. THE BOOK IS DIVIDED INTO TWO PARTS--(1) STUDENT GUIDE, CONSISTING OF QUESTIONS AND EXERCISES BASED ON THE RADIOGRAPHY MANUAL, AND (2) LABORATORY EXERCISES, CONSISTING OF 15 EXPERIMENTS, A LABORATORY TEST, A SOURCE UTILIZATION RECORD, AND A TRAINING PROGRAM SCHEDULE. THE LABORATORY EXERCISES INCLUDE (1) INVERSE SQUARE LAW, (2) SOURCE CALIBRATION, (3) METER CALIBRATION, (4) RADIATION ABSORPTION, (5) RADIATION SCATTERING, (6) X-RAY MACHINE EMISSION RATE, (7) DARK ROOM PROCEDURES, (8) GAMMA RAY EXPOSURE CALCULATIONS, (9) X-RAY EXPOSURE CALCULATIONS, (10) EFFECT OF GRAININESS, (11) WELDED PIPE RADIOGRAPHY, (12) PANORAMIC EXPOSURES, (13) HIGH CONTRAST SUBJECTS, AND (14) LEAK TESTING SEALED SOURCES. (DH)