Potential for Earth Strikes by Large Asteroids

The statistical chance of a large asteroid striking the Earth in any given year is very small–in fact almost statistically insignificant–since such events occur on average only once in more than 10,000 years. However, the consequences if such an event were to occur would be tremendous–perhaps even an “extinction level event.”  Recent advances in astronomy have led to the realization that a large number of Near-Earth Objects (NEOs) that have true “Earth-crossing” orbits was far greater than was originally estimated.  See: http://cfa-www.harvard.edu/cfa/ps/mpc.html The Tunguska, Siberia event in 1908 and the Curucá incident in Brazil in 1930 (in both of which …




EMP Threat to U.S. Presaged in a New Book

The World Tribune recently published some interesting excerpts from the new book, “War Footing: 10 Steps America Must Take to Prevail in the War for the Free World“, by Frank J. Gaffney and Colleagues, reprinted with permission from the publisher, Naval Institute Press, Annapolis, Maryland. OBTW, I had the privilege of meeting Frank Gaffney, back when I was on the editorial staff of Defense Electronics magazine. I was favorably impressed with both his acumen and his common sense. For the full text of the review, see:  http://www.worldtribune.com/worldtribune/05/front2453711.9284722223.html




Letter Re: Caution on Masonry Construction in Earthquake Zones

Mr. Rawles: You recently advised your preference for masonry, adobe, and rammed-earth retreat construction for the obvious ballistic protection and I agree. But here in northern Idaho and Montana we have recently experienced increased earthquake activity and you might caution your loyal readership to visit the excellent USGS website http://neic.usgs.gov/neis/states/idaho/hazards.html which provides detailed USA earthquake zone maps. Three million folks in Pakistan are now presently homeless because their bullet-proof houses crumbled after the earthquake. Before anyone builds their retreat they should also learn about California earthquake building codes and how to add inexpensive metal strapping to wood construction so their …




Three Letters Re: Motorcycle Vulnerability to EMP?

With regard to motorcycles and EMP, modern Japanese and German bikes (I cannot speak for Harleys) have black boxes that are susceptible to EMP in the same way that car electronics are. Older bikes, of course, used points ignitions and should survive unscathed. A good rule of thumb to use would be that if a car of a particular year would survive, then a motorcycle of that same year probably would too. Might even be able to add a year or two, since bike development was always a little behind cars in the ’70’s. Depending on your primary anticipated needs, …




Odds ‘n Sods:

“Thunder”, one of the senior members and moderators over at The Claire Files Gulching/Self-Sufficiency Forum just posted a couple of useful URLs on various designs for homemade backpacking stoves. See: http://wings.interfree.it/html/main.html and http://fallingwater.com/pct2000/gear/KissStove.asp. … The last time I checked, the spot price of silver was at $8.99 per ounce and gold was at at $522.30 per ounce. Those of us in the contrarian “Gold Bug” minority camp are finally feeling vindicated. There will probably be a profit taking dip soon, so stand ready to throw some of your spare change at this charging bull.  OBTW, you can get live quotes …