Charles Butcher, (Corpus Christi 1978-1982, Secretary 1979-80,
Committee 1980-81, Tacklemaster 1981-82)
Expedition 1981, 1982 (both years in the Stellerweg system, Chas being one of those who pushed to the very bottom in 1982), 1983 (exploring 143 and 144, high entrances above the Stellerweg system)
In third party to the bottom on the exCS Gouffre Berger trip of 1991.
Chas' work page