Mon 5 Mar 1838
From John R Denyer
To John Hall
Steam Engine, Thames Head
We shall require a considerable quantity of old boiler plate crooked and with spike holes as per pattern. Take every opportunity of cutting the old boilers to pieces and reserving any that will do until the Engine is put to work, when the plates can be heated in the fires much better and cheaper than at the forge. Length of pieces not material. I presume you have repaired any apparent injuries the Engine may have sustained during the late summer and that it is ready when requested.
PS. I have sent a grindstone, but not for the use of farmers or their men. I will send some round and square iron as soon as I can obtain it from Bristol, but if the plate iron you sent for is for T washers you must make them out of old boiler plates.