South Carolina Code of Regulations — Chapter 117 (Revenue)
S.C. Code Regs. 117-311.5 — Railroad Rails
Railroad rails, crossties, frogs, spikes, etc., do not in themselves constitute machines or machinery
when used in the construction of a railway or railroad either on or above ground or in a mine or
quarry. This material is rather in the nature of building material and should be considered as such for
taxing purposes.
Source: official text