Why is geophysics important for mining projects?
2 minutes with geophysics expert Aaron Tomkins
We spoke to Aaron Tomkins, Principal Geoscientist, GBG Group about what geophysics is, how it's utilised in mining, his pathway into geophysics and the function of the Geophysics for Mining Professionals online course.
What is geophysics?
"Geophysics is generally the process of using potential," says Aaron Tomkins, Principal Geoscientist, GBG Group. "And induced techniques to measure the structure and composition of the subsurface. It can provide accurate and reliable scientific results when collected in the right context and using the right method."
How did you come to work in geophysics?
"I did my degree in geology and geophysics with a Masters in structural geology, so I am a geophysicist and I started as a graduate geophysicist and worked my way through to a senior [level] and then into the operation side of things.
My journey into geophysics has included a fair bit of time in large scale construction management within the contract side of things. It also included geological mapping within the government departments within WA and also some deep base metal exploration out in the green fields. So I ultimately ended up in engineering geophysics and that was due to the variety and and scope differences that I could complete within the sector."
Why is geophysics important for mining projects?
"Geophysics has the ability to add value to mining projects by collecting large quantities of data. That's by providing a detailed image of the subsurface and it can be confirmed with traditional investigation methods like boreholes or test pits.
Once we have a numerical data set like geophysics, and we confirm it with a physical data set, like a borehole, the client can reduce risk dramatically by interrogating a larger data set. That saves time by attaining more data in less time. It reduces costs on any large geotechnical investigation. And if a mining project is specifically looking for an outcome, like an engineering moduli, depth to water table or density detail of the subsurface, the geophysical investigation can be specifically tailored to the aim, providing ultimate value to the client."
You facilitate the AusIMM Professional Certificate in Geophysics for Mining Professional. Who is this course for?
"This course is specifically suited to individuals who would like a grounding in geophysics as a whole. Some individuals who would benefit are project managers, mining engineers, designers, geologists or even early career geophysicists being graduates. Anything where a individual may have a request for quote or a scope of works put across their table."
What would someone get out of the course?
"So the key learning outcomes are we really want the participants to be able to understand multiple methods; geophysics is more than just radar or seismics. We also want the student to understand the industries that they're used in and to be able to formulate an aim and interpret drawings and complete a report. Being able to do these things creates a grounding in geophysics and will provide the student with really good value."
Gain a detailed introduction to geophysics with the AusIMM Professional Certificate in Geophysics for Mining Professionals. Learn more here.
