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Appendix 9 Breakdown of Construction Costs Post September 1939
| Services |
Amount £ (1936/39) |
Date |
Notes |
|
|
|
|
| Original Approval |
4,633,000 |
16.9.37 |
|
| Naval Tubes |
10,000 |
21.12.37 |
|
| Life Saving Rockets |
12,500 |
31.3.38 |
|
| 2 pdr. Filling |
12,000 |
31.5.39 |
|
| Magazines |
100,000 |
3.12.38 |
|
| Heating Magazines |
6,620 |
7.12.39 |
|
| Acceleration Costs |
225,000 |
5.9.39 |
|
| Fuze Power Factory |
84,500 |
6.9.38 |
|
| 40 mm Group |
146,000 |
7.12.39 |
|
| Addition to Filling Program |
350,000 |
19.10.39 |
|
| Camouflage |
40,000 |
19.10.39 |
|
| P.A.D. |
67,000 |
14.12.39 |
|
| Tools |
40,000 |
23.3.39 |
|
| Additional Services- |
40,000 |
23.3.39 |
|
| (A) Road & Rail |
85,092 |
12.10.40 |
Road Tunnel, Weighbridge, Access Roads, Extension to Tremains Halt |
| (B) Additional Buildings |
93,622 |
|
Fuze Powder Factory, quarters, coal dump, |
| (C) Electrical Services |
53,555 |
|
Additional Turbo Alternator, switch gear, |
| (D) Water Services |
60,302 |
|
Water treatment buildings, Steam Mains, South site fire & water mains |
| (E) Cast Iron Lining to Magazines |
67,200 |
|
Authors note: Only 2 magazines were lined owing to the shortage of Pig Iron |
| (F) Soiling and sowing of vacant areas |
57,250 |
|
|
| (G) Boiler House Services |
8,140 |
|
|
| (H) Additional mounding paving |
12,530 |
|
Including additional paving South site |
| (J) Additional Cleanways |
7,850 |
|
|
| (K) Fire A.R.P. & site protection |
33,515 |
|
Including gas proof sashes |
| (L) Extra plant & unforeseen items |
11,227 |
|
|
| (M) Supplies not included in the original estimates |
52,000 |
|
|
| (N) Additional cost of services in original approval - Extra reinforcement due to site difficulties |
142,966 |
|
Additional cost of cable laying, rock excavation and strengthening arches to magazine chambers. |
| (O) Increased cost of wages and Materials |
165,915 |
|
|
| (P) Increased cost of preliminary surveys |
18,550 |
|
|
| (Q) Removal of spoil to Waterton Moor |
70,410 |
|
Including development at Waterton Moor |
(R) Contingency Provision
|
47,842 |
|
|
(S) Settled claims & provision for probable claims
|
298,285 |
|
Includes £250,000 in respect of Factory contractors claims. |
(T) Additional provision for attendance on engineers
|
92,500 |
|
|
(U) Additional Agency charges
|
75,825 |
|
Adjusted for agency charges on site protection, and rounding off of M.O.W.B estimates. |
Subtotal
|
7,244,596 |
|
|
| Less saving on Main Factory engineering Charges: |
-34,365 |
|
|
| TOTALS |
7,210,231 |
(£5,790,020) |
Final figure at the start of production in late 1939 |
| |
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| Authors Notes |
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The pre September 1939 quote is stated in parenthesis above. As a rough guide the 1939 costing should be multiplied by 50 to approach current day costing
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Return to Appendix List
Appendix 10
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