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<p>[QUOTE=&quot;Lehigh96, post: 528747, member: 15309&quot;]Technically, I am not a metallurgist, but I do have a degree in metallurgy.&nbsp; The problem with your example is two fold.&nbsp; First, the size comparisons are way off.&nbsp; If the truck is the piece of debris on the planchet and the ice is the die, the ice would not be 7 inches thick, it would probably be more like 70 feet thick.&nbsp; Secondly, the hardness of the materials in your example is backwards.&nbsp; The truck is made of metal which is harder than the ice.&nbsp; In the minting process, there is no way that compacted grease and dirt are harder than the steel used to make the die.</p><p><br /></p><p>I appreciate the thought that you put into your solution, but I find it impossible that remnants of a grease filled die could land on the planchet and then damage the working die.</p><p><br /></p><p>Paul[/QUOTE]</p><p><br /></p>

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