No injured cavers recorded.
On August 4 a group of cavers explored a pit (Mueller Pit?) near Apple Creek in Perry County, Missouri. The 82 foot pit proved to have only a short section of sluggish stream at the bottom-and very bad air. One caver descended and waited at the bottom of the drop for several minutes. He then walked down a slight slope to the stream and became so breathless "it was a struggle to get to the rope only twelve feet away." He had detached his vertical gear and yelled up to send down cable ladders since he was having trouble getting on rope. Before this could be done, however, he got on rope and started up, breathing very hard. He made it up. The air in the pit was still, with no odor and no accumulation of organic debris; the stream enters via a sump.
Caver experienced breathlessness due to bad air at the bottom of Mueller Pit, struggled to return to the surface.