This is Throwback Thursday #217.  In these, we look back into the past at ESCONI specifically and Earth Science in general.  If you have any contributions, (science, pictures, stories, etc …), please send them to esconi.info@gmail.com.  Thanks!

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25 Years Ago – June 1999

• Dr. Deborah Bakken of the Field Museum presented at the General Meeting.  Her topic was “Pleistocene Archaeology in China”.
• Bealis Giddings led a field trip to the Lone Star Quarry.  They were looking for shark teeth, fish scales, trilobites, crinoids, and lots and lots of brachiopods.
• Rob Sula discussed his love for all things dinosaur.  He spoke specifically about the Hell Creek Formation and what could be found out west.
• The newsletter has an article entitled “Before Alvarez”.  It discussed the proposed theories of non-avian dinosaur extinction before the asteroid strike was discovered.
• DINE News reported that the Field Museum had a live camera on the preparators working on SUE.

50 Years Ago – June 1974

• The General Meeting featured a talk by Mr, George Svihla of Argonne National Laboratory.  He discussed the ecology of the Ogden Dunes of Indiana.
• The Archaeology Study Group had a field trip to the Koster Site and Cahokia.
• The National Gem and Mineral Show was held at the State Fairgrounds in Lincoln, NB.
• The Micromount of the Month was Laurionite from Laurium, Greece.
• The newsletter had an article about pearls.
• A Sun Times article was reprinted in the newsletter, the title… “The Once-Mighty Colorado: Tamed by Man – or Raped?”  Overuse of water is not a new problem!

70 Years Ago – June 1954

• The Regular Meeting was a panel discussion about the “Thornton Dig”.
• The Juniors had a field trip to the strip mines… adults were also invited.
• The 1954 Midwest Convention was held in Milwaukee, WI.  ESCONI had an exhibit.
• There was a field trip to the Lutz Quarry near Oshkosh, WI.  (See Throwback Thursday #22)
• The Fluorspar Mine at Rosiclare, IL closed after 100 years of operation.