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The remains of American Nuclear Corporation in Anderson County, Tenn. The company closed in 1972.  Photo courtesy of Tennessee Lookout

American Nuclear Corporation leaked radioactive chemicals for years before it closed in 1972

This article was originally published by Tennessee Lookout.

CLAXTON — An East Tennessee site that has been contaminated for about 50 years with radioactive waste is set to be cleaned up with about $13.5 million in funding from the Environmental Protection Agency, the Tennessee Department of Environment and Conservation told Anderson County on October 9. 

The American Nuclear Corporation site, located in Claxton, Tennessee, has been a source of concern for Anderson County Government for years. Local officials have reached out at various points since at least 2008 to the state, the EPA and their district’s congressmen for help on cleaning up the site, according to a compilation of county records distributed last year by then County Commissioner Catherine Denenberg to the county’s intergovernmental committee.  

“I don’t know if we’re on camera, but in case we are, I am not going to dance but I am so darn excited about this!” County Mayor Terry Frank said after the announcement at the county’s intergovernmental meeting. “This is huge for Anderson County.”

In the 1960s, the American Nuclear Corporation “manufactured radiological sources for medical institutions,” a 2010 county application for the EPA’s National Brownfield Program grant said. The company had obtained source materials for their products from the Department of Energy. Isotopes that were handled included Cobalt-60 and Cesium-137, the application said. 

“Poor housekeeping was a problem during the entire period that the plant was in operation, and is extensively documented in compliance letters by the Tennessee Department of Public Health — Division of Occupational and Radiological Health. ANC was repeatedly cited for violations involving radioactive material,” the application said.

This story was originally published on Phys.org and authored by Mick Kulikowski, Director of Strategic Communications and Media Relations at NC State University

Raleigh, NC — Researchers at North Carolina State University and global collaborators have mapped the mosquito’s tree of life, a major step toward understanding important traits, such as how the insects choose their hosts, feed on blood and spread disease. The findings will help researchers make better predictions to model disease transmission and understand what makes some mosquitoes better disease carriers than others.

The research suggests mosquito evolution over the past 200 million years mirrors the Earth’s history of shifting land masses and changing host organisms, said Dr. Brian Wiegmann, William Neal Reynolds Professor of Entomology at NC State and corresponding author of a paper describing the mosquito family tree. 

The William Neal Reynolds Professorship is one of the highest distinctions available to NCSU faculty members.The Reynolds Professorships were established in 1950 by William Neal Reynolds, a long-time president and board chairman of the R.J. Reynolds Tobacco Company, to recognize and support outstanding faculty achievement in research, teaching and extension.

“This ongoing project builds a big-data resource that mines the academic literature with published observations of the sources of blood mosquitoes drink, from animals as diverse as fish to humans,” Wiegmann said. “It focuses explicitly on data collection to infer aspects of mosquito biology in a contextualized way. That means linking up the family, or phylogenetic, tree with the narrative of life on Earth: geologic history, climate history and organism history.”

Red Knot.    Chuck Homler 

CHARLESTON — A landmark settlement prohibits horseshoe crab collection on the beaches of more than 30 islands along the South Carolina coast that are established feeding sites for rufa red knots during their annual migration — as well as any harvesting in Cape Romain National Wildlife Refuge — for at least five years.

Every spring, red knots time their 9,300-mile migration from South America to the Canadian Arctic perfectly so they stop on the same beaches of South Carolina at the exact moment horseshoe crabs begin to spawn.

These protein-rich crab eggs are critical for red knots, providing the fuel they need to complete their transpolar journey. This delicate relationship between horseshoe crabs and red knots has developed over millions of years.

Officials mull farm runoff as possible cause

NEWPORT — Tennessee state conservation, agricultural and environment officials are investigating a widespread fish kill along the lower Pigeon River.

The probe began on Aug. 12 after Tennessee Wildlife Resource Agency officers noticed multiple species of dead fish along the river near Newport.

Aquatic life in the Pigeon River, a popular rafting, kayaking and fishing spot boasting big smallmouth bass, has steadily recovered following years of pollution from the upstream paper mill in Canton. The Pactiv Evergreen site permanently closed earlier this year, after it and previous owners drastically reduced the amount of effluent into the river. Fishing and whitewater sports rapidly took off from there.

TWRA didn’t immediately identify the reason for the fish kill, which remains under investigation, but alluded to sediment and agricultural runoff that spiked during heavy rains this month.

Here is the full news release from TWRA:

“The Tennessee Wildlife Resources Agency (TWRA) and the Tennessee Dept. of Environment and Conservation (TDEC) are jointly investigating a fish kill on the Pigeon River above Newport. 

“On Friday, TWRA wildlife officers reported dead fish on the Pigeon River from Edwina Bridge down to the Newport police station.  TWRA fisheries biologists responded to the area documenting multiple species of dead fish at several locations. Based on the dispersal of the fish, recent water generation from the dam likely pushed them further downstream while leaving higher numbers of dead fish at the top of the kill zone.

“To determine potential contributing factors, biologists investigated the surrounding area and documented muddy runoff from agriculture fields likely caused by heavy rains in the area.

“TWRA biologists contacted the TDEC field office in Knoxville to assist with the incident and notified the Tennessee Department of Agriculture of the investigation. 

The incident currently remains under investigation.”