Although poisonous, chat can be used to improve traction on snow-covered roads; as gravel; and as construction aggregate, principally for railroad ballast, highway construction, and concrete production.
What is chat material?
Chat is a term for fragments of siliceous rock. In the process of mining and screening fine washed sand, a course grained small gravel remains. This “small gravel” product larger than sand but smaller than pea gravel is created. MCHAT Minus Chat is a 5/16″ minus small gravel and 1o to 20% course sand material.
What does Chatpile mean?
Chat Pile means a certain pile of chat located on the surface of the Property along with related chat and fines located on the surface of the Property, as more particularly described in Appendix B. Sample 1.
What are chat piles and how do they affect Tar Creek?
By 1979, water levels had increased to the point that the acid mine water began discharging at the surface from several locations, severely impacting Tar Creek. Much of the surface of the Tar Creek Superfund Site is an alien landscape that is notable for mounds of mine tailings, also known as “chat” piles.
How is chat poisonous?
When left exposed to the environment, the lead in chat can be a hazard to human health. Chat particles can enter soil, surface water, groundwater, and air. Exposure to lead has been known to cause learning disabilities and damage the human immune, blood and nervous systems.
What is chat gravel used for?
Uses. Although poisonous, chat can be used to improve traction on snow-covered roads; as gravel; and as construction aggregate, principally for railroad ballast, highway construction, and concrete production.
How long would it take to move all of the chat in Tar Creek?
Powell said the state remains committed to finishing the job at Tar Creek, but there are enormous obstacles to address. Just removing the chat piles alone could take 30 years if you could move out 100 train car loads each day, Powell said.
Can wind spread contamination from the chat piles?
Leachate and runoff from the piles enter groundwater and surface streams. Wind can blow contaminants from the chat piles onto neighboring properties; see Figure 39 for an example of weathered Tar Creek chat pile.
How much will a ton of gravel cover?
Un-compacted Cloburn aggregates weigh 1.4 tonnes per cubic metre. Therefore if you wish to apply them at a 50mm depth (the normal depth for a driveway) one tonne will cover 14 square metres.
Can you drive through Picher OK?
Can You Visit Picher, Oklahoma Today? Yes, you can still visit the town, just as I did. As of the year 2020, some side roads are closed (due to chat and sinkholes) but the main road that runs through the community still exists and will still take you past town into Kansas.
Whats the best gravel for a driveway?
These are the best options for driveway surfaces gravel, because they are small stones combined with rock dust, which makes a more solid driving surface.Crushed Stone #411. It is crushed up #57 stone combined with rock dust. Quarry Process. Pea Gravel. Jersey Shore Gravel. Marble Chips. Blackstar or Blacktrap Rock.
What is the largest Superfund site?
Hanford Site The 586 square mile Hanford Site is home to one of the largest Superfund cleanups in the nation.
Why is it called a Superfund site?
Superfund sites are polluted locations in the United States requiring a long-term response to clean up hazardous material contaminations. They were designated under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) of 1980.
Is it safe to drive through Picher OK?
Can You Visit Picher, Oklahoma Today? Yes, you can still visit the town, just as I did. As of the year 2020, some side roads are closed (due to chat and sinkholes) but the main road that runs through the community still exists and will still take you past town into Kansas.
What did the public learn from both Hus and Whyatts exposure studies?
Hus and Dr. Whyatts exposure studies? The public can learn how common pesticides and lead exposures affect our daily lives.