John Zimmerman has a Graduate Diploma in Extractive Metallurgy from Curtin University, and has been working in the mining & resources industry since 2007.
| Rank | Company | # | |
|---|---|---|---|
| 388th |  |
Zamanco Minerals | $8.15k |
| 389th | |
Nelson Resources | $7.57k |
| 390th |  |
Recharge Metals | $7.34k |
| 391st | |
Echo Resources | $6.34k |
| Position | Company | Year | Company's current rank |
|---|---|---|---|
| Registered Manager, Interim Chief Executive since 2019 | 2018 - 2020 | 391 | |
| Process Manager | 2017 - 2018 | ||
| Process Manager | 2015 - 2017 | ||
| Chief Metallurgist | 2014 - 2015 | ||
| Process Manager | 2013 - 2014 | 32 | |
| Metallurgy Superintendent | 2010 - 2013 | 32 | |
| Metallurgist | 2008 - 2010 | 32 | |
| Process Engineer | 2007 - 2008 | ||
| Graduate Metallurgist | 2006 - 2007 | 32 |
