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About Us - Our Writer

Dr. Ralph E. Pray

Senior Writer (retired)

Dr. Ralph E. Pray was the owner and operator of the Mineral Research Laboratory in Monrovia, California.  He passed away in May, 2014.
Read Articles by Dr. Ralph E. Pray
Subscription - March 1999 (Vol. 68, No. 7)
Successful Mineral Property Promotion
Subscription - July 1999 (Vol. 68, No. 11)
Desert Bonanza
Subscription - November 1999 (Vol. 69, No. 3)
Pullin' the Pin
Subscription - January 2000 (Vol. 69, No. 5)
Small Mine Selective Blasting
Subscription - March 2000 (Vol. 69, No. 7)
Evaluating a Placer Discovery
Subscription - June 2000 (Vol. 69, No. 10)
Placer Testing with Large Samples
Subscription - October 2000 (Vol. 70, No. 2)
The Trapiches of Chile
Subscription - September 2000 (Vol. 70, No. 1)
Fake Assays & Assayers
Subscription - January 2001 (Vol. 70, No. 5)
The Furnace Atmosphere During the Fire Assay
Subscription - May 2001 (Vol. 70, No. 9)
Picks & Pans: How to Succeed in a Small Mine, A Case History: 1990-2000
Subscription - September 2001 (Vol. 71, No. 1)
A Silver Opportunity
Subscription - November 2001 (Vol. 71, No. 3)
The Manson Mine
Subscription - April 2002 (Vol. 71, No. 8)
The First Prospectors
Subscription - May 2002 (Vol. 71, No. 9)
Picks & Pans: Mining Tungsten Ore—A Case History
Subscription - July 2002 (Vol. 71, No. 11)
The Fire Assay of Fly Eyes
Subscription - October 2002 (Vol. 72, No. 2)
Gold Garbage: Scams New & Old
Subscription - April 2003 (Vol. 72, No. 8)
A Unique Prospecting Method
Subscription - July 2003 (Vol. 72, No. 11)
Prospecting for Iron in Alaska
Subscription - January 2003 (Vol. 72, No. 5)
The Old Dutch Cleanser Mine
Subscription - April 2004 (Vol. 73, No. 8)
A Working Arrastra
Subscription - April 2005 (Vol. 74, No. 8)
Dredging Below the Homestake
Subscription - January 2011 (Vol. 80, No. 5)
Our Readers Say
Subscription - August 2005 (Vol. 74, No. 12)
The First Mine in America
Subscription - May 2006 (Vol. 75, No. 9)
How to Prospect for Silver Field Tests You Can Use to Detect the Hidden Metal
Subscription - February 2007 (Vol. 76, No.6)
Prospectors Beat Mining Claim Tax

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