1. Stress distribution and rock fracture zones in the roof of longwall face in a coal mine

   • A. Kidybinski
   • C. O. Babcock

   OriginalPaper Pages: 1 - 19

2. Hydrofracture mechanisms in rock during pressure grouting

   • H. Y. Wong
   • I. W. Farmer

   OriginalPaper Pages: 21 - 41

3. Exfoliation

   • F. K. Brunner
   • A. E. Scheidegger

   OriginalPaper Pages: 43 - 62

4. Notes

   OriginalPaper Pages: 63 - 64