“Sell your garment, and buy one”: Churches offer concealed weapons training. (Thanks to Stephen M. for the link.)
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Steve H. mentioned a portable high volume water filter, using a 12 VDC pump.
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Five Different Shelf Life Studies: Two on Canned Food and Three on Dry Food
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From loyal contributor R.B.S.: U.S. food banks raise alarm as drought dents government supplies
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R.B.S. also spotted this tutorial: Waxing Cheese for Storage