Aug 23, 2023 · 20m · green-blueprint
America’s next-generation mining future [partner content]
gold bands on the timeline = statements, start to end. Hover to read, click to jump. CC turns on captions
Pat Risner, president of South32’s Hermosa Project, outlines how next-generation mining practices, advanced automation, and low-impact environmental engineering in Arizona are establishing a secure domestic supply of critical battery-grade manganese and zinc for the clean energy transition.
How this conversation actually went
Every chapter scored 0–10 on four independent dynamics. Hover any point for the reasoning behind the score. The hosts hold 8.6% of the talking time here. How this is scored →
speaking balance: gold is the hosts, purple is the guest (3 minute bins)
In a completely collaborative partner interview, Risner provides the sharpest industry critique by addressing the ethical and supply risks of Congolese cobalt compared to domestic manganese.
Hardest push from the hosts ▶ 6:42 Addressing mining's historic environmental and tribal legacyLacey directly brings up public skepticism regarding environmental destruction, poor labor conditions, and historical marginalisation of tribal communities.
Biggest teaching moment ▶ 16:20 China's manganese market dominance statisticsRisner educates listeners and the host by citing that 99% of battery-grade manganese comes from China and that the US has not mined manganese for 50 years.
The host holds their own ▶ 4:01 Framing manganese and zinc as overlooked critical mineralsLacey exhibits domain understanding by noting public discussion fixates on lithium and cobalt while underscoring the specific importance of manganese and zinc.
the scores for every segment, with the reasoning behind each
| Chapter | Topic | The hosts as informed peer | Guest teaching | Guest disagreement | The hosts pushing back | Why |
|---|---|---|---|---|---|---|
| Overview and Geography of the Hermosa Mining Project | 4 | 4 | 0 | 0 | Lacey demonstrates solid baseline knowledge of critical mineral supply chains beyond standard headlines. Risner delivers an educational breakdown on manganese chemistry in EV batteries and zinc in wind infrastructure. | |
| Redefining Responsible Mining and Environmental Stewardship | 4 | 4 | 0 | 1 | Lacey raises standard public concerns regarding mining's historical environmental impact and tribal neglect. Risner methodically details the underground footprint, dry stack tailings technology, and proactive tribal consultation. | |
| Fostering Local Workforce Development and Economic Impact | 3 | 3 | 0 | 0 | Lacey prompts Risner on local community benefits and technological modernisation. Risner explains the establishment of remote command centres allowing local non-miners and underrepresented groups to operate underground machinery. | |
| FAST-41 Permitting and Supply Chain Independence | 4 | 4 | 0 | 0 | Lacey introduces federal permitting processes under FAST-41. Risner provides quantitative context on US supply vulnerability, noting heavy Chinese dominance over battery-grade manganese and zinc processing. | |
| The Evolution of Modern Mining and Personal Passion | 1 | 1 | 0 | 0 | A friendly concluding exchange where Lacey asks a personal career reflection question and Risner describes modern industry shifts towards digital tools and machine learning. |