Title:
METHOD OF AND APPARATUS FOR FORMING SUPPORT HOLE BY COOLING INNER WALL OF EXCAVATED HOLE
Document Type and Number:
Japanese Patent JPS5754633
Kind Code:
A
Inventors:
RICHIYAADO II RANDOO
Application Number:
JP12476780A
Publication Date:
April 01, 1982
Filing Date:
September 10, 1980
Export Citation:
Assignee:
RICHIYAADO II RANDOO
International Classes:
E02D19/14; E21D1/12; E21D9/04; (IPC1-7): E02D19/14; E21D1/12