(20 July - 1 August 1991)
The first Italian expedition (S.
Cecchini, M. Galli, G. Longo, and R. Serra) has
collected wood samples to search in tree resin for micro
particles from the cosmic body. The time distributions
of the embedded particles, clearly showing peaks centred
on 1908, made it possible to recognize a first list
of 14 elements as probable constituents of the Tunguska