From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Time and cost analysis table for various part numbers across coremaking, moulding, and fettling stages.
| Identifier | ExFiles\Box 97\2\ scan0228 | |
| Date | 1st December 1942 guessed | |
| PART NUMBERS | COREMAKING | COREDRESSING | MOULDING | FETTLING - | T.A (mins) | Rate | Aver. Bonus | T.A (mins) | Rate | Aver. Bonus | T.A (mins) | Rate | Aver. Bonus | SAWING & GRINDING | FETTLING - | - | - | - | - | - | - | - | - | - | T.A (mins) | Rate | Aver. Bonus | T.A (mins) | Rate | Aver. Bonus D.3400 | 23.3 | 24/- + 5/- + 18/- | 129% | 11.0 | 24/- + 5/- + 18/- | 128% | 40.0 110. | 42/- + 33/6 53/- + 33/6 | 129% | 8.5 | 42/- + 33/6 | 141% | 34.0 | 42/- + 33/6 | 141% D.4480 | 40.0 | do. | do. | 15.0 | do. | do. | 94.0 173. | 42/- + 33/6 53/- + 33/6 | do. do. | 26.5 | do. | do. | 35.0 | do. | do. D.7719 | 85.0 | 53/- + 33/6 | do. | 60.0 | 53/- + 33/6 | do. | 97.0 133. | 42/- + 33/6 53/- + 33/6 | do. do. | 34.0 | do. | do. | 20.0 | do. | do. D.9745 | 491.7 245.8 | do. 24/- + 5/- + 18/- | do. do. | 327.5 54.5 | do. 24/- + 5/- + 18/- | do. do. | 292.0 608.0 | 42/- + 33/6 53/- + 33/6 | do. do. | 122.0 | do. | do. | 338.0 | do. | do. D.15256/7 | 208.0 302.6 | 53/- + 33/6 24/- + 5/- + 18/- | do. do. | 276.7 138.3 | 53/- + 33/6 24/- + 5/- + 18/- | do. do. | 238.0 567.0 | 42/- + 33/6 53/- + 33/6 | do. do. | 38.0 | do. | do. | 237.0 | do. | do. D.16950 | 63.0 | 24/- + 5/- + 18/- | do. | 30.0 | 24/- + 5/- + 18/- | do. | 180.0 240.0 | 42/- + 33/6 53/- + 33/6 | do. do. | 24.0 | do. | do. | 45.0 | 24/- + 5/- + 18/- | do. D.16951 | 50.0 | do. | do. | 22.0 | do. | do. | 70.0 170.0 | 42/- + 33/6 53/- + 33/6 | do. do. | 27.0 | do. | do. | 30.0 | do. | do. | ||