Matt Sloustcher
@SF_Matt
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EVP Corporate Affairs - Chief Communications Officer @mpmaterials | previous PR chief @honda | UCSB Gaucho | dad | policy wonk | opinions strictly my own
Las Vegas, NV
Joined March 2009
Yes. Yes they do!
At today's hearing, @SF_Matt @MPMaterials testified that this Select Committee’s bipartisan report and investigation are essential to executing a whole-of-economy strategy on critical minerals. He stressed that “products need markets,” and early leadership from GM and Apple,
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For you nerds and reindustrializers out there, that’s molten salt electrolysis to producer rare earth metals in 🇺🇸 in continuous production We’re doing it
A look inside the $MP Independence magnetics facility in Fort Worth, Texas👇 https://t.co/u7lwwasrKV
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Please join us!
Thinking about MP Materials ( $MP) and what their current hiring wave says: • Dozens of open roles across Mountain Pass (CA), Fort Worth (TX), and Las Vegas (NV)…spanning everything from Instrumentation Techs and Maintenance Techs to Process Engineers, Superintendents, and
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We must win
Vertical integration isn’t something you can claim. It’s something you must build. $MP did — end to end.
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A couple things omitted 🧐 - the widened loss has much to do with one-time closing costs associated with transformative deals signed in the quarter - record refined rare earth production Q - 2nd best ever concentrate production Q - record metal production Q - > $50M of
.@MPMaterials quarterly loss widens after halting sales to Chinese customers $MP
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Delivering 👇
$MP Q3 highlights: • Record NdPr production: 721 MT (+51% YoY, +21% QoQ) • REO in concentrate production: 13,254 MT — our second-highest quarter ever • Record metal production at Independence • Price protection agreement effective 10/1 • Heavy rare earth circuit (📸)
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Incredible way of explaining something succinctly 👇
Did you know that we’re in the middle of a new era gold rush over a rare earth material that most people can’t even pronounce, and we’re losing to China big time? That’s where @MPMaterials comes in. For more tech company breakdowns, check out @chartsncrafts on YouTube
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Unique initiative where impact can be seen & felt 👇
Two photos. One powerful story. Baker, CA is the closest town to Mountain Pass—and like many high desert communities, job opportunities are limited, especially for young people. A few years ago, we partnered with Baker Valley Unified to help bridge the 36-mile gap and
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GM deserves a lot of credit for participating actively the development of supply chains in America
wsj.com
The automaker has quietly seeded the revival of the domestic magnet industry, locking down supply amid trade tensions.
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Presented without comment. Oh lordy...
🔥🎤 “We got what’s underneath — we got antimony, and be carrying the heat!” @Locksley_LKY $LKY.ax | $LKYRF shareholders just dropped a rap about securing America’s supply chain. This one hits different. #Mining #CriticalMinerals #LocksleyResources
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James Litinsky on @SquawkCNBC • MP deal ≠ Intel • Long tradition of public-private partnerships • Magnets = feedstock for physical AI + future of warfare • Scaling 10X to meet the moment • Apple = cornerstone of MP recycling • $MP shareholders up big since go-public •
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"MP is a rare earth rarity—a U.S.-based producer that owns a mine, processing plants, and magnet factories—and the deal, which included a large investment from the U.S. government, a price floor, and volume guarantees, was a game changer." $MP
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Thanks to Congresswoman Young Kim for visiting Mountain Pass. There's simply no substitute for touring the mine, walking the refinery, and engaging our talented teammates. We also thank her and leaders across Washington for acting decisively and with purpose. Now is truly a
The fight for critical minerals starts right here in Southern California. I visited the Mountain Pass Rare Earth Mine to see firsthand how CA is leading in critical minerals production & strengthening national security—so America, not the CCP, controls our energy future.
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It is always powerful to have your representative in Washington stop by to celebrate progress and rally the team. Thank you to @RepSusieLee!
Thanks to @RepSusieLee for celebrating our transformational milestones at HQ today. We are grateful to Rep. Lee for recognizing the strategic importance of our work—not just for the national interest, but for Southern Nevada. $MP will invest hundreds of millions of dollars at
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Very proud of this young man on his first day of second grade! Not sure how many more before he's taller than me!
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Beat
$MP Q2 2025 results **Upstream: 13,145 MT of TREO produced at Mountain Pass (+45% y/y) — our 2nd-best quarter ever **Midstream: 597 MT NdPr oxide refined at Mountain Pass — a new record (+119% y/y) **Downstream: Significantly expanded NdPr metal production and sales at
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TBH, this was not on my 2025 bingo card, but I am so here for it
After five years of quiet collaboration, we're so proud to partner with @Apple to bring this supply chain home—stronger, more innovative, and more resilient than ever $MP
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