Papers and discussions.

Bibliographic Details
Corporate Authors:	Symposium on Exploration Drilling, Drilling Symposium, Drilling and Blasting Symposium, Drilling Symposium Exploration Drilling
Format:	Conference Proceeding
Language:	English
Published:	[v.p.] [publisher not identified] ;
Series:	Bulletin (Pennsylvania State University. Earth and Mineral Sciences Experiment Station) ; 72. Colorado School of Mines quarterly.
Subjects:	Boring > Congresses. Blasting > Congresses. Borings > Congresses.

Description
Published:	[1st]- 1951-
Item Description:	Volume for 1959 issued as Bulletin 72 of the Mineral Industries Experiment Station of Pennsylvania State University (TN24.P4P39) and as the Mining engineering series: 1960- as the Quarterly of the Colorado School of Mines (TN210.C68 volume 56, etc.).
Physical Description:	volumes : illustrations