The plan view of coal tips numbers 4, 11 and 12 prepared by the East Ferry Road Engineering Company Ltd., of Milwall, London. The title is "Proposed 25 Ton Hydraulic Fixed Coal Hoist for the Taff Vale Railway - Penarth Dock" and is drawn at a scale of ⅜ inch = 1 foot. It shows the shute and cradle and the relative location of the hydraulic cylinders for the lifting and tipping functions. The arc of each of the cranes at maximum luff with 30 foot rake and 80 foot lift is also indicated.

At the top left we have the two slewing cylinders for the cranes and lower left are the hoisting cylinders for the cranes. The hoisting and tipping cylinders for the cradle are lower centre as the drawing is orientated. [142]