McLean, J.D. 1976 Mount Cook National Park, Ball Hut ground stability: report on observations, May 1975-March 1976. Lower Hutt: New Zealand Geological Survey. New Zealand Geological Survey report EG 254 16 p.
Abstract: This report is written at the request of the Secretary, Mt Cook National Park Board, Lands and Survey Department, Christchurch and deals with the effects of the Ball Hut, Mount Cook National Park. The hut is situated on moraine adjacent to the junction of the Ball and Tasman Glaciers at the northern end of a metal road about 17 kilometers from the park head-quaters at Mt Cook (see location plan, Figure 1). The present building is approximately 50 years old and is owned by the Tourist Hotel Corporation who lease the land on which the hut stands from the National Park Board. Alpine Guides (Mount Cook) Ltd, a subsidiary company of the Tourist Hotel Corporation conduct mountaineering instruction courses from the hut. During the summer climbing season as many as 50 people per night have used the hut. The present study was initiated after the appearance of the tension features, when it was recognised that there could be a risk to human safety in the event of foundation failure or rock fall above. (auth)