Methods of fastening flat-bottom rails to concrete or timber sleepers static tests on mills no.4 spike (E-235)

1. The manufacturers, Exors of James Mills Ltd. supplied to the Research Department a number of their No. 4 spikes 7¼" long in order that preliminary tests could be made as required by the Permanent Way Sub-Committee Minute No. 817, Appendix D (26th February, 1957).