Multiple muons in the Homestake underground detector

The 113-m/sup 2/ water Cherenkov detector at a depth of 1480 m (4200 m water equivalent) in the Homestake Gold Mine, Lead, South Dakota, has been used to study multiple muons with E/sub ..mu../> or approx. =2.7 TeV produced in cosmic-ray interactions by primaries of 10/sup 14/--10/sup 15/ eV/nucleon. The decoherence curve and multiple-muon rates are presented.