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<p>[QUOTE=&quot;rlm&#039;s cents, post: 212734, member: 7957&quot;]The 400 tonns is a unit of force.&nbsp; PSI is force per unit area (pressure).&nbsp; If it were applied to 10 sq. inches, it would be 40 ton per sq. inch (80,000 psi).&nbsp; The force required to mint a coin would be proportional to the size of the coin.&nbsp; The psi required would be appoximately the same for any size coin.[/QUOTE]</p><p><br /></p>

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