SP 598301-598310	1961		Thrall (Job P-3139)		
	SP 598311-598350 	1962		Greenville Steel Car Co.	

	SSW 85600-85649		1964		GBEC (Lot 12064)

		(to DODX 598313=598350)

These 60'-0", 75-ton flat cars were built as above and featured 18 stake pockets, fishbelly side sills, overhanging wood decks, Equipco (Uarco) hand brakes and Hydra-Cushion underframes. Many of these cars were assigned to SP's SkyBox serivce hauling aircraft sub-assemblies. At some point, many or all of these cars were re-assigned to other services and lost their distinctive lids.

It is quite rare during this time period for more than one builder to have built cars within a given class. It is not unheard of, however!

It is not known how many at this time, but some cars of this class became DODX cars retaining their SP numbers.

Photo by: Charles Lange

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