The employers will test you during the interview on what you have learnt. These are not tick and flick courses. You will be required to use what you have been taught on the mine site. We in fact encourage all the employers to test students during the interviews, to see if they have absorbed the required information.
Get the mining questions right in the interview and meet their other requirements and they hire. Get the mining questions wrong or if you start umming and ahhing before your answers. Then they will probably move on to the next candidate. It’s that simple, if you know how their mine works then you have something to offer the employers.