The M.R.W.A bought a total of thirty sheep wagons to the W.A.G.R.'s CXA class design between 1949 and 1955 as follows:   1949 DXB619-623 1950 DXB624-630 1955 DXB601-618

The two sides of the wooden bodied DXB.

In addition a batch of all steel versions of the design (but with detailed differences) was built in 1961 (DXB631-642). When the W.A.G.R. took over in 1964 these wagons (of both types) became class CXA. They were renumbered as follows:

1964	DXB 601-9, 611, 612, 614-622, 624-630 to CXA 40401-9, 40411, 40412, 40414-40422, 40424-40430 DXB631-4, 636-9, 641, 642 to CXA40431-4, 40436-9, 40441, 40442
1965	DXB610, 613, 623 to CXA 40410, 40413, 40423 DXB635, 640 to CXA 40435, 40440

	Frank Stamford's photos show CXA40417 (ex DXB617) in February 1966 still wearing its Midland grey but with WAGR numbers.
The decline in sheep traffic meant that these wagons were quickly used as a source of underframes for conversions. The all steel wagons lasted longer than the rest as sheep wagons but none were converted for further use. Presumably removing the bodies was more difficult.

1967	40404 converted to JOA, 40402 converted to NS
1968	40412 written off, 40418 converted to J, 40405, 40421, 40428 converted to JOA, 40426 converted to NS
1969	40401, 40409, 40417, 40420, 40423, 40427 converted to JOA
1971	40419 converted to JOA, 40415 converted to NS, 40403, 40406, 40407, 40411, 40413, 40414, 40416, 40422, 40424, 40430 converted to HE
1972	40410, 40434 written off
1973	40429 written off
1975	40425 written off
1976	40408 written off
1977	40432, 40433, 40435 written off
1979	40431, 40436-40442 written off