Report discussing an international conference on mine-experiment stations assembling in Pittsburgh, Pennsylvania. The United States sent invitations to countries that had mine-experiment stations, Great Britain and Canada were the only countries, that did not accept invitation.
This is part of a series of reports that cover the study of 202 sites throughout the world providing data on rock and soil to a depth of 100 feet and on climatic conditions. This volume discusses locations in Europe, the U.S.S.R. and Southwest Asia.
This dialog allows you to filter your current search.
Each of the Countries listed note their name and the number of records that will be limited down to if you choose that option.
The list can be sorted by name or the count.