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Rock Tech Lithium Inc. Letter to Shareholders

Shareholder Letters & Outlook

Rock Tech Lithium Inc. Letter to Shareholders

VANCOUVER, British Columbia, April 10, 2019 -- Rock Tech Lithium Inc. (the "Company" or “Rock Tech”) (TSX-V: RCK;

Frankfurt: RJIB) is pleased to provide a Letter to Shareholders from Chief Executive Officer, Martin Stephan:

“Volkswagen ‘Breaks the Ice’ in the Lithium World”

A few days ago, Volkswagen made a groundbreaking announcement of a long-term lithium supply agreement with a major

lithium producer. This important development will have a ripple effect across the entire electric vehicle supply chain from junior

lithium explorers to automotive OEMs.

This development by VW comes as no surprise to readers of my past letters as I have been expecting the automotive OEMs

to get more directly involved in securing raw materials for some time now. I wanted to take this opportunity to share with you

VW’s recent announcement and provide some commentary on several key points.

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“Lithium will in the near future be one of the most sought-after raw materials on earth.”

This isn’t new to investors and stakeholders in the lithium exploration and mining business but it illustrates a critical turning

point in the mentality of the major automotive OEMs. In our discussions with the car makers, we have been impressing upon

them the importance of securing supply of battery metals as there was a real risk that supply wouldn’t allow them to realize

their increasingly ambitious electrification goals. Just one year ago, the managers at these companies seemed rather naïve

about the lithium supply challenges and didn’t give much credence to our comments; however, this now starts to change.

While risks to the supply-side still exist, this change in mindset is a strong positive for lithium companies.

“Lithium is currently regarded as an unrivalled charge carrier that will be irreplaceable for the foreseeable future, as

no other element offers comparable properties for automotive battery applications.”

One of the first questions I get when talking to potential investors or other interested parties is about the substitution of lithium.

They say, “Yeah, but what’s beyond lithium?” While I don’t pretend to know what the future holds for battery technology, it is

clear that lithium isn’t going anywhere anytime soon. As it stands today, advancements are being made in cathode chemistry

with the two main chemistries featuring increasing volumes of nickel and decreasing volumes of cobalt. Both of these

chemistries rely on lithium, in increasing volumes, and the most likely post-lithium-ion battery, the solid-state battery, contains

lithium in the anode as well. It’s clear that lithium is here to stay for at least the next two decades and probably longer as

VW’s long-term supply agreement confirms.

“A distinction is made between extraction from salars [brine projects] and extraction from ore mining [hard rock

projects]. Mining is considered the future-proof solution, both commercially and in terms of sustainability. Lithium

extraction in salt lakes [salars] – predominantly in Chile, Argentina and Bolivia – is deemed difficult to calculate, since

the evaporation process can be severely affected by rain, snow and natural contaminants in the material, and the

impact on the environment (for example, on the groundwater level) can be potentially problematic.”

This is a key point that I discussed with investors i.e. during our North American road show during the third and fourth quarters

of 2018. During these meetings, I highlighted two key risks for these salar projects in the “lithium triangle”: geopolitical risk and

environmental risk. The first is related to the currency crisis in Argentina and the introduction of export taxes as one tool to

attempt to address this. The second risk, environmental, is growing and potentially catastrophic for lithium explorers and

miners. Extracting lithium from salars is water intensive and governments have become more stringent in the granting of these

rights curbing or curtailing expansion plans. As the impacts on water are becoming better understood, we are seeing some

communities in Argentina refuse to grant the “social license” required to allow these companies to operate in the area.

“Lithium extracted from mining for the future-relevant intermediate product “lithium hydroxide” is commercially

more attractive (there is one less production step as compared to salar production), more stable to extract, easier to

scale and generally more sustainable.”

You have heard me mention this several times before. As discussed above, the current cathode trajectory is towards higher

nickel content at the expense of cobalt. While this increases energy density, it does present some stability challenges

requiring a lower battery operating temperature. In order for the lithium to do its job in these cathodes at a lower temperature,

lithium hydroxide is substituted for lithium carbonate. Hard rock lithium projects, such as our Georgia Lake lithium project, are

the preferred source for lithium hydroxide due to the reasons mentioned by VW. In addition, should the shift to solid-state

batteries occur, hard rock lithium projects may be the preferred choice for the lithium metal contained in the anodes.

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This development is very positive for the lithium industry and hard rock lithium explorers and miners in stable

legislations such as Canada, in particular. Our Georgia Lake lithium project, where we are currently working on

permitting and other activities related to a Feasibility Study, is in an ideal position to benefit from this emerging

trend.

From the desk of,

"Martin Stephan"

Martin Stephan

Director, Chief Executive Officer

For further information, please contact:

Brad Barnett

Chief Financial Officer

Rock Tech Lithium Inc.

777 Hornby Street, Suite 600

Vancouver, B.C., V6Z 1S4

Telephone: (778) 358-5200

Facsimile: (604) 670-0033

Email: [email protected]

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture

Exchange) accepts responsibility for the adequacy or accuracy of this release.

Statements included in this announcement, including statements concerning our plans, intentions and expectations, which are

not historical in nature are intended to be, and are hereby identified as, "forward ‐looking statements".  Forward ‐looking

statements may be identified by words including "anticipates", "believes", "intends", "estimates", "expects" and similar

expressions.  The Company cautions readers that forward‐looking statements, including without limitation those relating to the

Company's future operations and business prospects, are subject to certain risks and uncertainties that could cause actual

results to differ materially from those indicated in the forward‐looking statements.