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Posted by Jeff H. on Thu Mar 27 02:15:13 2003, in response to Re: Subway Interlockers:,
posted by Jersey Mike on Wed Mar 26 21:41:41 2003.
Most IND interlocking machines were supplied by GRS and are not electro-pneumatic.
I wouldn't say that. Overall the IND had a fairly even split
between US&S and GRS, because of competitive bid requirements.
In contrast, the BMT was almost exclusively GRS (with some Federal
and Hall thrown in early on) and the IRT US&S.
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