1. Impact of excavation technique on strength of oil shale pillars

   • J. F. T. Agapito
   • H. N. Maleki
   • L. A. Weakly

   Papers Pages: 93 - 105

2. Incremental explosive energy distribution in blasting design

   • Geoffrey D. Just

   Papers Pages: 107 - 118

3. Astrata control system and its application in West German coal mining

   • U. Grotowsky
   • H. Irresberger

   Papers Pages: 119 - 132

4. Use of rock classification to estimate roof caving span in oblong workings

   • P. R. Sheorey

   Papers Pages: 133 - 140

5. Shaft design criteria

   • Kot F. Unrug

   Papers Pages: 141 - 155

6. Upgrading of high moisture content lignite

   • Tibor G. Rozgonyi
   • Laszlo Z. Szigeti

   Papers Pages: 157 - 169

7. Effect of multi-seam mining on subsidence

   • Ma Wei-Min
   • Zhu Wei-Yi

   Technical Note Pages: 171 - 173

8. Book reviews

   • I. W. Farmer
   • M. L. Athorn
   • A. R. Bacon

   BookReview Pages: 175 - 183