# 39.73 Documents and records required at field stations.Each licensee shall maintain the following documents and records at the field station:(a) A copy of parts 19, 20, and 39 of NRC regulations;(b) The license authorizing the use of licensed material;(c) Operating and emergency procedures required by § 39.63;(d) The record of radiation survey instrument calibrations required by § 39.33;(e) The record of leak test results required by § 39.35;(f) Physical inventory records required by § 39.37;(g) Utilization records required by § 39.39;(h) Records of inspection and maintenance required by § 39.43;(i) Training records required by § 39.61(d); and(j) Survey records required by § 39.67.