Manylion am y math o ddogfen lywodraethu sydd gan yr elusen a phan y'i sefydlwyd. Nid dyma destun llawn dogfen lywodraethu'r elusen.
CONSTITUTION ADOPTED 23 SEPTEMBER 1971 AS AMENDED 21 OCTOBER 1976 18 OCTOBER 1990, 21 JANUARY 1993, 16TH MAY 2002 AND 19TH MAY 2005
Gwrthrychau elusennol
TO ADVANCE THE EDUCATION OF THE PUBLIC IN AND TO PROMOTE THE ART AND SCIENCE OF TUNNELLING,INCLUDING THE CREATION AND USE OF UNDERGROUND SPACE BY FOSTERING UNDERSTANDING, EXPERIENCE, INTEREST AND RESEARCH THEREIN
Maes buddion
Y maes y gall yr elusen weithredu ynddo, fel y nodir yn ei dogfen lywodraethu.
