1840-D Liberty Head Quarter Eagle : History & Value
By Charles Morgan and Hubert Walker for CoinWeek Notes ..... The Dahlonega Mint struck 3,532 1840-D Liberty Head Quarter Eagles in the first year
Source: coinweek.com
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1879-O Liberty Head Double Eagle : History & Value
The 1879-O Liberty Head Double Eagle is a rare gold coin that is challenging to locate in grades AU58 and above. Examples can sell for $100k.
Source: coinweek.com
1797 Capped Bust Eagle : History & Value
There are three die marriages of the 1797 Capped Bust Eagle gold coin with Heraldic Eagle reverse, each of differing rarity and value.
Source: coinweek.com
UI Engineer gets NASA grant to study Iowa soil erosion
Photo by Irum Shahid UI News Services Release With rising commodity prices bringing more farm land under cultivation, a University of Iowa researcher is checking to see whether soil erosion may also be on the rise. Thanos Papanicolaou, professor in the UI College of Engineering Department of Civil and Environmental Engineering, has received a three-year,…
Source: iowaenvironmentalfocus.org
Innovators Aim to Give Anaerobic Digestion a Shot in the Arm
Processing highly variable feedstocks, each with their own makeup of sugars, fats, and other organic compounds is a complex job. Researchers at the University of Iowa are turning to automation to address associated challenges.
Source: waste360.com