Canyonram wrote:The Church Rock Mill site is far from being a 'spot' contamination event. The breach of the dam holding the milling wastes in 1979 is considered the largest release of radioactive materials in the US and comparable to other nuclear energy related disasters such as Three Mile Island and Chernobyl:
According to Wikipedia about TMI:
Wikipedia wrote:Within hours of the accident the Environmental Protection Agency began daily sampling of the environment at the three stations closest to the plant. By April 1, continuous monitoring at 11 stations was established and was expanded to 31 stations two days later. An inter-agency analysis concluded that the accident did not raise radioactivity far enough above background levels to cause even one additional cancer death among the people in the area. The EPA found no contamination in water, soil, sediment or plant samples.
From:
http://www.ncbi.nlm.nih.gov/pmc/article ... /table/t1/
Event Location Year Source Released Material Radiation Released
Chernobyl Chechnya, USSR 1986 Nuclear power plant Nuclear fission by-products 270 million curies
Three Mile Island Pennsylvania, US 1979 Nuclear power plant Nuclear fission by-products 13 curies
Sequoyah Fuels Corporation Oklahoma, US 1986 Uranium conversion plant Uranium hexaflouride gas 3 curies
Church Rock Mill New Mexico, US 1979 Uranium mill Transuranic isotopes and heavy metals 46 curies
Using wolframalpha.com to do some simple computations (as well as
http://en.wikipedia.org/wiki/Chernobyl_disaster and
http://en.wikipedia.org/wiki/Three_Mile ... al_release), the Church Rock spill resulted in roughly an exposure of .5 rad/hour vs. 300,000 rad/hour from Chernobyl or .14 rad/hour from TMI. That is hardly an "apples to apples" comparison. People often make the mistake of assuming that TMI was the same as Chernobyl. That is patently false (I can throw up more references besides Wikipedia, but the references at the bottom of the Wiki pages are a pretty good starting point). Church Rock was a point contamination. Larger than most, but a point contamination. Look here for the scale of the Chernobyl disaster:
http://en.wikipedia.org/wiki/File:Chern ... p_1996.svg
You're looking at an area roughly the size of Arizona. That is not a point source, that is regional contamination. Want further proof. I can take a picture of my Geiger counter - it won't show 5000 uSv/hr here in Page. Therefor Church Rock was not a regional release.
You are splitting hairs to separate uranium mines from uranium milling sites----they are part of the same process. You don't get uranium milling sites anywhere unless you have done uranium mining as well.
And uranium mining becomes unprofitable if there is not place to mill the ore. Catch 22. My reason for going after mills (and partially supported by your own statements about Church Rock) is that mills are not easy to defend and cause more damage. One mill serves several mines. Shut down a mill and several mines close.
There is no salavation in claiming that uranium mines don't 'increase the background level of radioactivity on the Colorado Plateau
First, I don't know what exactly you mean by "salvation". Second - I'd like to see your scientific source that says that uranium mines increase the radiation level of the Colorado Plateau (as you stated would happen "the Colorado Plateau has a high natural amount of radioactivity, the highest in the nation. That doesn't give license to increase it by digging up the high-grade ore and milling it so that it is now exposed to air, surface water, soil, and ground water."). I would not (and only a fool would) argue that uranium mines don't have a localized impact on the area around them. We've both seen this. Show me a study that shows how the uranium mines of Marble Canyon increased the background radiation level of Page (let alone Farmington). The Colorado Plateau is huge, 130,000 square miles (
http://en.wikipedia.org/wiki/Colorado_plateau) - unless someone can find me a source that shows that the background level across
all of the Colorado Plateau was increased solely by mines, I'm going to find that unsupported statement to be questionable.
the EPA and the Navajo Nation will be glad to hear that since both are currently trying to both identify and mediate the hundreds of abandoned uranium mines that are contaminating Navajo Nation and increasing the background level of radioactivity in the environment.
Yes, they absolutely are. But not all of the environment. According to the EPA (
http://www.epa.gov/rpdweb00/understand/calculate.html), the Colorado Plateau averages 46mrem/year. That comes to .00126 uSv/day - which is what my Dosimeter that I use daily shows - and far lower than the suggested limit from the dosimeter (an Ecotest Terra-P, if you're interested). I know (from experience in the Canyon near uranium mines) that if you're around a mine, your mSv/day count goes up. Since I'm within the normal range for this region, that indicates that mining contamination does not extend far from the surface of a mine. Obviously if we're talking aquifer pathways, as you've mentioned, the contamination can go further. Again, however, that does not equal the entire Colorado Plateau being contaminated with uranium mining byproducts.
The Rio Puerco River is forever contaminated---the uranium mining process was the source.
A mill, to be precise.
Also, the concern for uranium mining near Grand Canyon is not focused solely on a single mining operation---it is the 1,000+ other mining claims in the vicinity around the Canyon. If one mine is given a permit to operate it provides a precedent for all the other mining claims to be developed. With the profit margin for uranium mining increasing, it will become profitable to mine other breccia pipe sites around the Canyon. Now, we are talking about a very large potential impact on the environment.
Now imagine if those mines had no place to process their ore on the Colorado Plateau - how many would come in to operation? How many would still remain profitable with increased transportation costs? That's why I keep talking about the mills.
Please provide the literature for the science supporting your statement that "talking about a uranium mine increasing the background level of the Colorado Plateau is simply not true."
See my above experiment. I would also like to see your citations (or personal experiment) showing a uranium mine increasing the background level of radiation of the entire Colorado Plateau, not just the local environment.
I've provided numerous citations available on the web to support most of my comments---I'd appreciate that you do the same, especially when you make declarative statements.
Very well:
PageRob wrote::roll: There's already enough radioactive stuff actually in the canyon (not on the plateaus surrounding the rim) to keep you from getting a good night's sleep if you think too hard about it.
Source:
http://hikearizona.com/photoset.php?ID=13000&start=45 http://hikearizona.com/photo.php?ZIP=162792 http://hikearizona.com/photo.php?ZIP=162793 and your posts about Horseshoe Mesa in this same thread.
PageRob wrote:If it was going to contaminate the aquifer, its had hundreds of millions of years to do so.
USGS report referenced in AZ Daily Sun article previously discussed in this thread
PageRob wrote:The stuff I have read indicates that the US government implemented air quality standards in reservation mines years before non-reservation mines. Source for that is "Uranium Frenzy."
Source is, as I say, Uranium Frenzy. Inspectors had a much easier time accessing BIA mines because they were already controlled by the federal government - no companies worried about scaring off workers. I will admit that I intend to spend a bit more time researching this, so I will update with more information and sources as they become available.
I'm not going to get into the whole genocide/not-genocide side-track about mining, because it was just that - a side-track to the primary discussion, so to continue with citations:
PageRob wrote:canyonram wrote:there are dump sites in Tuba City that accepted the Orphan Mine wastes
It was a mill accepting ore for processing, not a waste-remediation dump.
Source:
http://www.eia.doe.gov/cneaf/nuclear/pa ... itle1.html
PageRob wrote:
Which is a different rock type all together than the ones being mined at the proposed sites - Navajo Sandstone is highly porous. In addition this was a mill site - where ore was refined, not a mine.
Source: Strat column in Az Daily Sun showing mine breccia pipe, personal knowledge of the geology of the Colorado Plateau (minored in Geology), Glen Canyon Dam Technical Record of Construction (the most detailed minute analysis of one cross section of Navajo Sandstone I have ever seen).
PageRob wrote:Also, this site was in operation before the EPA existed so the retention ponds were not lined with impermeable materials to prevent exactly what we are talking about.
Source:
http://www.eia.doe.gov/cneaf/nuclear/pa ... itle1.html http://en.wikipedia.org/wiki/Epa (EPA began operating in 1970).
PageRob wrote:Historically the biggest environmental disasters associated with uranium mining have been mills, not mines.
Everything we have both posted supports this, but here's a couple examples:
http://www.eia.doe.gov/cneaf/nuclear/pa ... itle1.html http://en.wikipedia.org/wiki/Church_Roc ... mill_spill http://en.wikipedia.org/wiki/Moab_Tailings
PageRob wrote:I can conduct an experiment this week to determine who is correct here, actually. "Watch this space."

Status: Still in progress...
PageRob wrote:It is the highest in the nation, but it is nowhere near the highest in the world. The level that we're exposed to here on the plateau is low.
Source: Personally monitoring my radiation exposure level with EcoTest Terra-P personal dosimeter/Geiger counter. Also look at:
http://iopscience.iop.org/0952-4746/29/ ... C9DCB88.c2
PageRob wrote:But talking about a uranium mine increasing the background level of the Colorado Plateau is simply not true.
See above statements.
PageRob wrote:they do the most damage and cost the most to clean up. An individual mine simply cannot do the same sort of damage that these mills can.
Moab Tailings - $720 million
http://en.wikipedia.org/wiki/Moab_Tailings
Tuba City - $34.14 million
http://www.eia.doe.gov/cneaf/nuclear/pa ... itle1.html
Cotter Mill - $43.7 million
http://www.chieftain.com/news/local/art ... 03286.html
I can dig up more too if you want...
PageRob wrote:And flying and living near power plants, etc. etc. etc
Source:
http://www.epa.gov/rpdweb00/understand/calculate.html
And that brings us up to now, unless there's something important I missed...
'ludicrous' which has been difficult since there are many that deserve that label and more.
Saying that a nuclear detonation would be discounted as natural cannot be described as anything else. I know we've been at loggerheads here and managed to keep things civil, but that statement seems designed to provoke a certain reaction in people. Maybe you have a source that you can cite that shows that ADEQ and others have plans in place to discount fallout from nuclear bombs as naturally occurring. Otherwise it is just your opinion or speculation, or perhaps a use of words intended to bring out certain emotions in the reader.
You mentioned that you have discovered a mining claim up near the Four Corners region. When did you make this discovery? Do you plan to develop this dig yourself or will you sell the development rights to a company such as Denison?
It is a deposit of ore. One needs to make a claim with the county recorder's office and the land management agency. Why would I sell off such an awesome asset to someone else?
How much do you anticipate earning from your discovery?
Probably nothing.
Stock in uranium mining operations such as Denison peaked a few years ago but then went into a downturn.
This seems contrary to your previous claim of "With the profit margin for uranium mining increasing". So their stock is falling while profits are rising? Sounds like it might be time to buy!
Current standards for scientific papers requires that authors reveal their funding source and if they have any vested interest in their sponsors or source of their funding. I will state my current affiliation in regard to Uranium Mining operations: I do not own stock, will not invest in Uranium mining, do not go looking for mining claims, and have no vested interest in seeing Denison (or any other Uranium mining operation) get their permits.
Where do you stand in regards to your financial interest in Uranium mining?
Not that HAZ is a scientific forum that requires financial disclosures in any way shape or form, and since we've already been over this in another form when you asked if I worked for a mining company...
I own no stock - period. In anything. None. I have no financial tie to anything uranium related (I may not even end up with a claim if I can't get $200 scraped together for the filing fees). I am not a shill for the uranium companies, or any mining companies.
Let me ask you, since you are a Environmental Health Specialist, do you have ties to any antinuclear groups, own stock in nonnuclear power sources or utilities, or have you ever testified against a uranium mining or milling company? Do you have a vested interest in seeing any uranium company
not get a permit? Do you have clients who are engaged in litigation against any uranium mining or milling company?