`` yep , i was just thinking the same thing '' theo chimed in , trying to sound enthusiastic , `` i 'm gon na cycle out to the quarry near hartham park and see if i can get some sketches of people working there , i 'd quite like to sketch the machinery they use , some of those cranes are massive , and i think the sheer scale of the machines and how they dwarf their human users could be really interesting . ''