Lk. Ding et al., REINTERPRETATION OF UNUSUAL DOUBLE-CORE EVENT OBTAINED IN KOLAR GOLD MINE FIELD (KGF), Science in China. Series A, Mathematics, Physics, Astronomy & Technological Sciences, 39(11), 1996, pp. 1219-1222
The unusual event with double cores reported by KGF in 1979 cannot be,
as suggested by the authors, produced by either neutrinos or muons, b
ut is rather likely to be produced by a heavy and neutral particle CO
from the cosmic rays.