Casgliadau Arlein

East Pit Winder, Elliot Colliery. General arrangement of alterations to winding engine for Messrs. Powell Dyffryn Steam Coal Co. Ltd., WP Cylinders 28" Diameter, LP 42" Diameter x 6' stroke, winding drum 15' to 25'. Semi conical. Scale 3/4" to 1'. 10.11.64

Engineering blueprint with stencilled and handwritten title at centre of bottom edge and a handwritten note in red pencil recording name of pit, serial number and when the plan was received written at lower right-hand corner of drawing.