Frank And ? ?

I know that the gentleman on the left is Frank Liddiard, but who are the other two men and where on Skinningrove works are they?

Eric Johnson believes: ”This may be the location of the scale charging car, on no 5 furnace. The large round object on the left might be the weighing scale, for weighing the charges from the materials bunkers ore/ coke/ limestone, and then taken to the skips for hoisting to the furnace top.” Steve Partlett confirms with: “This is No5 Blast furnace scale car. As Eric states, the dial to the left and behind the men was the indication for the weigh hopper below the men. The item behind Frank is the air jack for opening the bunker gates required to allow ore to run into the hopper. As far as I remember there were four of these jacks, so a mix of materials could be loaded into the hopper, in shorter time. The Scale car was driven from the shelter to the right of the men. Although hidden from sight under the furnace bunkers, it was a cold and windy machine to operate in winter.”
Image courtesy of Joyce Harding, thanks to Eric Johnson and Steve Partlett for the updates.