Okay, let’s tackle this. So Kelvin has 35 years of experience as a metallurgist, which is extremely valuable. The fact that he’s worked in the Greater Brisbane Area for most of his career suggests he’s familiar with local industry standards. His skills in process engineering, mineral processing, and extractive metallurgy are in demand, but not as highly sought after as those in fields like software development or finance. Considering his experience, education, and location, I’d estimate his hourly rate to be around $125, which is slightly below the national average for experienced metallurgists in Australia. This rate is also consistent with the rate for similar professionals in the Greater Brisbane Area.