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<p>[QUOTE=&quot;rlm&#039;s cents, post: 866458, member: 7957&quot;]Well, sort of.&nbsp; I completely agree the switch from coal to gas AT THE MINT had little to do with it.&nbsp; However, they were far from the only one to switch.&nbsp; As a for-instance, I have seen a picture of Pittsburgh, Pa main street with the street lights on at noon on a bright sunny day <u>by necessity</u> (~1915).&nbsp; Maybe that is an extreme example, but Pittsburgh is far from the only place that used to have smog/air polution problems.&nbsp; Even my little home town noticeably cleaned up when the local railroads got rid of the steam engines for diesels.&nbsp; I know that does not correlate to the Peace/Morgan toning timing, but I am positive that the &quot;toning&quot; from the early twentieth century was much more significant that it is today.[/QUOTE]</p><p><br /></p>

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