TY - GEN AU - Humphreys, J C AU - Dozier, Charles M C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1986-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.IR.86-3480 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1986 TI - Cobalt-60 facilities available for hardness assurance testing: ER -