15 minutes. Pretty casual and relax. Just a few normal interview questions. Then they will call you back to say if you are successful or not. Then medical and health assessment.
Multi-step process with online application, video interview and psychometric testing before progressing onto phone interviews etc. Be prepared for the video interview to take longer than anticipated as you are given three attempts at recording each response.
I applied online. The process took 5 months. I interviewed at BHP in Mar 2020
Interview
There was an online interview answering prerecorded questions. This involved a question about myself and why BHP followed by a number of behavioural questions. The questions gave you a minute or so to gather your thoughts then roughly 3 minutes to respond. After comleting these 7 questions, it was followed by an IQ test.