Maerdy Colliery 0-6-0ST No. 'Mardy Monster'
Nottingham, Nottinghamshire, UK 		Location: Boden Engineering
Status: Operational
Posted: Mar 6, 2025 @ 12:03:21 by Russell Newman
The overhaul on ex Maerdy Colliery Peckett built OQ Class 0-6-0ST Works No. 2150 "Mardy Monster" the most powerful industrial steam locomotive, has now been completed and the locomotive is operational as it underwent a test steaming which saw movements around Boden Engineering depot. "Mardy Monster" was even tested by shunting a Class 56 Diesel locomotive as well to test its power and has even gone back to its original name "Mardy No. 1". "Mardy No. 1" will go back into the workshops of Boden Engineering for final painting before going out on hire on the heritage railway circuit soon.
Posted: Aug 22, 2023 @ 11:08:38 by Russell Newman
The ex Maerdy Colliery Peckett built OQ Class 0-6-0ST Works No. 2150 "Mardy Monster" the most powerful industrial steam locomotive, is in the final stages of its overhaul which has seen a brand new saddle tank made and fitted along with new brasses, new pistons made with new rings, cab fittings and regulator overhauled and second mechanical lubricator fitted.
Posted: Sep 18, 2020 @ 14:09:01 by Russell Newman
Former Maerdy Colliery Peckett built OQ Class 0-6-0ST No. 2150 "Mardy Monster" the most powerful industrial steam locomotive has been sold to a new private owner and has now left the Elsecar Heritage Railway and is said to have been relocated too Boden Rail Engineering at Nottingham in Nottinghamshire for completion of her overhaul there.
Posted: May 14, 2020 @ 06:05:46 by Russell Newman
The former Maerdy Colliery Peckett built OQ Class 0-6-0ST No. 2150 "Mardy Monster" which is the most powerful industrial steam locomotive has been put up for sale by its owner.
Posted: Jul 2, 2012 @ 13:07:11 by Steve Frost
This Peckett locomotive is one of only three built to this design - the OQ class. It gets its name from the fact that the OQ class is the most powerful industrial locomotive built in the UK and it worked at Maerdy Colliery in the South Wales coalfield.

It was a loco that attracted a lot of attention from enthusiasts after the end of main line steam on Britain's railways. Now preserved in working order with a livery like a British Railways passenger engine it tackles the steep gradients on the short Elsecar Heritage Railway in Yorkshire.

Posted: Apr 28, 2008 @ 07:04:33 by Steve Wainwright
Album photo taken 26th April 2008 at Elsecar Heritage Centre