簡素にO&Pでいいよ
P&Hからヒント
http://img.directindustry.com/pdf/repository_di/40115/p-h-4170c-154680_1b.jpg
http://i.ytimg.com/vi/C7Ip0L0aoqE/maxresdefault.jpg
http://img.directindustry.com/images_di/photo-g/electric-mining-shovel-40115-4122955.jpg
http://img.directindustry.com/images_di/photo-g/electric-mining-shovel-40115-4122995.jpg
http://www.lampson.com.au/cms/images/stories/fruit/Mining/goldhofer%20self%20propelled%20trailers%2001.jpg
http://i00.i.aliimg.com/photo/v1/125887748/USED_HYDRAULIC_TRUCK_CRANE_P_H_T.jpg
http://www.ssimiami.com/image/cache/data/T250-500x500.jpg
http://www.cranehotline.com/images/upload/listings/large/ch6613_4bc72c3da986b.jpg
http://www.tefutefu-crane.com/maker/ph/photo/t250m-a1.jpg