March 26, 1936 pouring of the 200-inch mirror at Corning Glass Works.

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- sittingduck
  
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12 years ago

Thu, Jun 9, 2011 11:02 PM

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- PrecisionmachinisT
  
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posted
12 years ago

Fri, Jun 10, 2011 3:01 AM

If you're making a telescope, I have several lbs of cerium oxide you can have you just need to get ahold of me let me know....

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