Unloading wood chip at Portland VIC

Portland is a major port in VIC. Wood, grain and aluminum from the near by smelter are loaded onto ships. Wood chip comes in B Double load trailers. The harbour has at least 2 sets of unloading systems that take 3 trucks at a time and lifts the truck to 60 degrees to empty the wood chip from the trucks. Each truck is only in position for 10 minutes before it is empty and can move away allowing the next truck to get into position. I'm a solo traveller, traveling Australia in 4WD and caravan.