Jackson, A. A.; Ryan, Michael P., Was the Tungus Event due to a Black Hole?
Nature, Volume 245, Issue 5420, pp. 88-89 (1973)
DOI:10.1038/245088a0

Abstract

THERE have been many attempts to explain the Tunguska meteorite, ranging from the prosaic to the bizarr. We suggest that a black hole of substellar mass such as those that have been postulated by Hawking could explain many of the mysteries associated with the event.