Complex sentence: The Bwlch-y-Clawdd section opened that year while the Rhigos Road section, from Treherbert to Hirwaun, delayed due to financial constraints, opened in November 1929.
Split into simpler sentences: The Bwlch-y-Clawdd section opened in 1928. The Rhigos Road section, from Treherbert to Hirwaun, delayed due to financial constraints, opened in November 1929.