In 1954 the first open wagons on the standard post-war 36'-0" bogie chassis appeared as class RC. In 1959 a new variant with higher seven plank sides appeared as class RCA. They entered traffic as follows:
1959	23901-23908, 23933, 23935-23939
1960	23916-23922, 23924-23932, 23934, 23940-23942, 23944-23970, 23972-24020
1961	23909-23915, 23923, 23943, 23971, 23972
Further wagons were added to the class by conversion of RC's although wagons were written off too (presumably as a result of accidents). A single wagon (23966) was also fitted with a corrugated iron roof and reclassified RCK in 1986.

1972	23942, 23999 written off
1978	23933, 23973 written off
1979	24014 written off
1982	22973 converted from RC
1983	22902, 22903, 22907, 22909, 22910, 22912, 22913, 22914, 22915, 22917, 22919, 22921, 22922, 22923, 22926, 22927, 22928, 22930, 22931, 22933, 22934, 22936, 22937, 22938, 22939, 22940, 22941, 22943, 22945. 22947, 22948, 22949, 22950, 22951, 22952, 22953, 22955, 22956, 22957, 22958, 22959, 22960, 22962, 22963, 22965, 22967, 22969, 22972, 22974, 22975, 22978, 22979, 22980, 22981, 22983, 22984, 22985, 22986, 22987, 22988, 22990 from RC.
1986	23966 to RCK.
1988	23911 written off
1990	23963 written off
1992	23923, 23946, 23959 written off
1993	22902, 22903, 22907, 22909, 22910, 22912, 22913, 22914, 22915, 22917, 22919, 22921, 22922, 22923, 22926, 22927, 22928, 22930, 22931, 22933, 22934, 22936, 22937, 22938, 22939, 22940, 22941, 22943, 22945, 22947, 22948, 22949, 22950, 22951, 22952, 22953, 22955, 22956, 22957, 22958, 22959, 22960, 22962, 22963, 22965, 22967, 22972, 22973, 22974, 22975, 22978, 22979, 22980, 22981, 22983, 22984, 22985, 22986, 22987, 22988, 22990, 23902, 23903, 23904, 23905, 23906, 23907, 23908, 23909, 23910, 23912-22, 23924-32, 23934-41, 23943, 23944, 23945, 23947-58, 23960, 23961, 23962, 23965, 23967-72, 23974-90, 23992-98, 24000-13, 24015-7, 24019, 24020 written off
1997	22969, 23901, 23964, 23991, 24018 written off

The WAGR outline diagram is shown below.