Joseph Armstrong's early death in 1877 meant that the final phase of broad gauge motive power was the responsibility of William Dean. He continued the Iron Duke renewal programme and added more convertibles, including some of Armstrong's 388 class goods locomotives. He also developed some elegant express locomotives such as the 3031 Class singles. Following the abandonment of the broad gauge on 20 May 1892 the majority of the remaining 195 broad gauge locomotives were taken to "the dump" at Swindon. Most of the convertible locomotives were altered to run on the standard gauge over the following 18 months while the remainder were cut up.