Top Tweets for #50YearsofMapping
NMMR's mission is to #preserve our Nation's mine maps for future generations. We accomplish this through outreach, data collection, & maintaining a broad database of our collection. #50YearsofMapping #PreservationWeek #Scanning
Documenting historic mines is our business. Previously under the Bureau of Mines, & now part of @OSMRE, the NMMR has been preserving mine maps for >50 years. #50YearsofMapping #PreservationWeek
This is doc# 300066. Mn & Fe mines in Augusta County, #Virginia. @Virginia_Energy

The NMMR Explained: check out our video to find out more about the Mine Map & our mission! https://t.co/H5vxUNhLYj #NationalArchives #50YearsofMapping
#10YearsAgo I took a picture of our equipment! We still use these aperture card scanners. They scan the film that's mounted to the card at special ratios so we can blowback the map. https://t.co/UaUrmX2Kze #50YearsofMapping #ITAP

#10YearsAgo I took a picture of our equipment! This TouchTable was state-of-the-art then. Check out our current equip: https://t.co/UaUrmX2Kze #50YearsofMapping #ITAP

#10YearsAgo I took a picture of our equipment! We still keep these viewers around for quick peeks at our film collection. #50YearsOfMapping #ITAP

#50YearsofMapping and still going strongπLooking forward to what @minemaps is mapping out for year 51πΊοΈ
Doc# 380326 is the No. 02021 Mine in Wise County, #Virginia, from 1966. Have a safe and #HappyNewYear #2021. On to our 51st Year of Mapping! Cheers! #50YearsofMapping ππΊοΈπ

Doc# 380326 is the No. 02021 Mine in Wise County, #Virginia, from 1966. Have a safe and #HappyNewYear #2021. On to our 51st Year of Mapping! Cheers! #50YearsofMapping ππΊοΈπ

#TYSM for following along our #50YearsofMapping journey! Our team wishes you safe and happy celebrations of your own this winter! #minemaps #MeettheTeam #ThankYou

#ICYMI πΊοΈ the National Mine Map Repository has been tracing the history of mine mapping for 50 years! A lot has changed since NMMR was created, learn more about its history and accomplishments here: https://t.co/R933j3LgFD Partying face #50YearsofMapping

Here is our final map of the year! An @MSHA_DOL map from 2019: doc# 1005983, showing the #Quecreek #MinePool #monitoring #well. From Somerset County, #PA. #50YearsofMapping

One of the 70 maps we have from 2018 is this: document # 1001138. This is one of 9 scenes that comprise this entire #colorful map. Maps are divided into scenes when they are too big to fit on the #scanner. From Indiana County, #PA. #Pennsylvania #50YearsofMapping

Doc# 399811 is our 2016 mine map, brought to you from Buchanan County, #Virginia. #OldDominion #50YearsofMapping

Guess which (#gold mining) company is featured the most in our database...
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Did you say #Newmont? Here's a stereoscope picture of (now) their Gold Hill in Cripple Creek. from 1900. πΈ@librarycongress #TriviaTuesday #50YearsofMapping

Doc# 399402 is one of our maps from 2015. This one shows the areas of #ValleyFill around an #abandoned #mine. From Floyd County, #Kentucky. #50YearsofMapping

Guess which state has the most mine maps in our database (https://t.co/RtdslIbSKf)...
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If you guessed #WestVirginia, you're right! Check out this 1912 photo of #WVminers at a Dellslow, Monongalia County mine. πΈ@librarycongress #TriviaTuesday #50YearsofMapping

Take a screenshot & try our #MineMap #WordSearch! You can become more familiar with some mine mapping words like #ADIT and #LIGNITE which mean #MineOpening & low grade #coal, respectively. #TriviaTuesday #50YearsofMapping

Guess the slang term used for boys that worked in the mines...
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If you guessed #nipper, you're right! 3 of the boys in this photo fr @librarycongress are nippers, working 5000' below surface in the #Pennsylvania #coalmine #TriviaTuesday #50YearsofMapping

Our coal seam names literally go from "A" to "Zenith". Here is a #WordCLoud of common words used in #CoalSeam names. #TriviaTuesday #50YearsofMapping

#DYK each #CoalSeam can be known by multiple names? A prior example we used was the Pittsburgh, which is also known as the #8 seam. So even though we have 947 unique seams in our database, they are known by 2,247 names! #TriviaTuesday #50YearsofMapping
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