Charles Roberts built 1,000 22 ton hopper wagons to Diagram 161 in 1949, and a year later 1,500  were built to Diagram 1/162 uprated to 24 tons. These were built by Charles Roberts, and Cambrian with Birmingham upgrading 500 of the 22 ton 1/161 wagons. They were initially used for iron ore traffic and latterly Limestone, chalk and sand.

Specifications

· Die-cast compensated chassis

· Finely profiled wheels and axles with brass bearing pockets

· Highly detailed injection moulded body

· Many separately added fine details

· Sprung metal buffers

· Sprung metal coupling hook and three link coupling

· Expertly applied liveries