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Re: [Phys-l] Natural Gas versus Electricity



Somehow I missed this thread -- probably during my change of computers.

Regarding microwave scanning it's well known that microwaves cause cataracts. So much so that the Prof. at UCSC doing microwave spectroscopy told me to always warn the students to keep their heads away from horns and unterminated wave guides even tho the power was only around 10 milliW. I've also read about techs dying from accidentally getting blasted by highly powered radar antennas.
PG&E occasionally has inserts about magnetic fields. They also admit it's not yet decided. There have been positive rat (mouse?) studies, which curiously become negative when higher intensity fields are used. If I remember correctly the worst (best, if one wants to develop a ratcide) effect is at about the level from the rear of CRT displays and around 50 => 100 Hz. I'm suspicious enough to the extent of recommending Gate Keeper not use the clock radio as a pillow.

I have two political comments:

First I suppose, like the IP, I should be amused instead of offended by the cave comment. These "primativists" are not the ones who want us to live in caves. It is instead the proponents of nuclear weapons.

Some socialist tendencies have evidently persisted even tho the CEGB was privatized.

bc, who was invited to interview for a position with the CEGB in 1969.

p.s. The issue of childhood lukemia, etc. was "sparked" by a very long article in the New Yorker. [1990 July 9 follow up 19th]

"ANNALS OF RADIATION about cancer & power lines. Writer tells about an extraordinary number of cancer cases & other illnesses among residents of Meadow St. in Guilford, Conn. The trouble may have been caused by an electric substation on the street but Connecticut Light & Power Co. said there was no proof of this. Next writer tells about a cluster of brain-tumor cases in Rowan County, near Salisbury, N.C. The largest number were near the Duke Power Company's Buck Steam Plant. Again inaction was the result of these revelations. Next writer tells about cancer among children in Montecito. CA. An investigation revealed electrical installations around the Montecito Union School but there was no conclusive evidence of a health hazard so nothing was done. A number of schools in the Fountain Valley School District in Southernal Calif. were built near high-current feeder lines & there were several cases of cancer but no action was taken. Tells about the numerous studies that show workers exposed to electromagnetic fields develop cancer at a higher rate than unexposed workers. During the past year the EPA has been swamped with requests from the public for information about electromagnetic fields & in May it released preliminary information about a draft report prepared by its office of Health & Environmental Assessment, which acknowledges the existence of a possible link bet. cancer & power lines. What EPA director Wm. Farland did not tell the press was that his own staff had recommended in the initial draft report that ELF electromagnetic fields be classified as "probable human carcinogens" & this was deleted from the summary of the EPA report."


And,

"DEPARTMENT OF AMPLIFICATION of ANNALS OF RADIATION(7/9/90) about power lines & their effect on cancer rates on residents of Meadow Street, in Guilford, Connecticut; on citizens in two small towns in North Carolina; and on pupils in a California elementary school. Tells about a meeting at the Guilford Public Library on Aug. 20th, during which two officials of the Connecticut Department of Health Services Division of Environmental Epidemiology and Occupational Health declared that their was no cancer cluster on Meadow Street. Among those listening to the presentation was Robert Hemstock, a Guilford resident, who, in January of this year, first sounded the alarm about a cluster on Meadow Street. Hemstock noticed that three of the 29 cancers on a map displayed by the Health Dept. appeared to have occurred along the route of a feeder line that carried high current from the Meadow Street substation to other towns..."

The author refutes the counter claims of the power co. despite his correction of the exageration of some of his data. The map used by the power co. to refute the authors claim ended up reinforcing it!


G.D. Williams wrote:

The small group of people who want to return humans to the caves have been
trying for decades to show that radiation from electrical power (usually

from high-voltage transmission lines) is a health hazard. They haven't

been
able to do so. For every statistically questionable study that shows some
negative health factor, they seem to come up with another (equally
questionable) study that shows positive correlations.


I attended a rather good conference here in the UK recently where the
speaker from the National Grid said that there definitely was clustering of
child lukemia cases around high voltage utilities. There is no known causal
link as yet (and if there is one it may not be anything to do with the
electricity supply i.e. reduced value housing near electric train tracks,
sub stations etc occupied by lower income families on poor diets etc). I was
pleasantly surprised that he even admitted that there was clustering. His
open and unbiased manner restored my faith in that particluar industry.

Cheers

Gary

G. D. Williams,
Editor, Physics Education
National Coordinator, IoP Teacher Network
gary.williams@iop.org
gdwilliams100@hotmail.com