Ivor The Engine S02 E12 Mr Dinwiddy's Gold

There's trouble on the railway. The Merioneth and Llantisilly Rail Traction Company Limited is to be sold to the Welsh National Railway Commission as a branch line and Ivor might have to become shunter at Pontypool Roads. So it's up to Mr. Dinwiddy the goldminer and Mrs. Porty to save the railway from closure.