File:TregoMap1913.png: Revision history

Jump to navigation Jump to search

Diff selection: Mark the radio buttons of the revisions to compare and hit enter or the button at the bottom.
Legend: (cur) = difference with latest revision, (prev) = difference with preceding revision, m = minor edit.

2 April 2016

24 November 2014

  • curprev 06:4006:40, 24 November 2014Cxbrx talk contribs 533 bytes +533 Source: [https://archive.org/details/mineralresources142unit Mineral Resources of the United States, 1914--Part II--Nonmetals"] Discussion of drilling in the center of the playa for Potash: "The site selected for the boring is in the center of the Bla...