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Oil Seeps in Northern California
July 2001 by Edgar B. Heylmun, PhD
Indians used asphalt from oil seeps in California for caulking boats and other objects long before the white man arrived. Spaniards noted seeps as early as 1542, and the Portola expedition in 1769 used oil for wagon axles and as a fuel. Spaniards also used crude stills for obtaining lamp oil for use in the missions.California Water Board Tries to Restrict Dredging
She explained that she didn’t like the numbers that the computer model gave her for this section of river, so she “adjusted the numbers by hand” to more accurately reflect what she thought they should be.
Critical Metals: Antimony
I’ve been taking a look at the mining and uses of a number of critical metals in series of articles, and it’s time to take a look at antimony.
Pediments
A pediment is a broad, gently sloping erosion surface or plain of low relief that is often found in arid and semi-arid regions at the base of a receding mountain front. The example shown is from the Palo Verde Ranch 15-minute topographic quadrangle, southwest of Tucson, Arizona. This is one of the best examples the writer has ever seen.
Ask the Experts—How did the bill to address RS 2477 pan out?
Q: In the November 2006 issue, you published an article “Bill to address RS 2477” regarding rights-of-way across public lands (HR 6298, introduced by Representative Steven Pearce of New Mexico). Will you please provide me with some information about how this panned out?
Administration Officials Pledge to Work Closely With Miners
The nation’s mining industry can expect a more favorable working climate, Bush administration officials told a receptive audience at the Northwest Mining Association’s (NWMA) annual convention.
Over the Divide
Robert Joseph Dahlke
(1939 - 2013)
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