Deep shaft peculiarity

No.12447911 ViewReplyOriginalReport
>It is an interesting fact, and one not generally known that nothing that falls from the mouth of the deepest mining shaft in the world ever reaches the bottom. This has been demonstrated at the famous Red Jacket shaft of the Big Calumet and Hecla copper mine at Calumet. The article, no matter what shape or size it may be, is invariably found clinging to the east side of the shaft. One day a monkey wrench was dropped, but it did not get to the bottom. It was found lodged against the east side of the shaft several hundred feet down. This incident coming to the attention of the Michigan College of Mines, it was decided to make a careful test of the apparent phenomenon. It was decided best to use a small but heavy spherical body, and a marble, tied to a thread, was suspended about twelve feet below the mouth of the shaft. When the marble was absolutely still, assuring that it would drop straight, the thread was burned through by the flame of a candle. The marble fell, but at a point 500 feet (800 feet?) from the surface brought up against the east wall of the shaft.

https://drive.google.com/file/d/0BzRIx6p9pjw1NXZuVXpaOWlEbHM/view

I can't find anything else about this interesting phenomenon. Do you fine gentlemen know anything about it?