Panggabean BD, Putra AYU. ANALYSIS OF NATURAL UNDERGROUND TUNNEL BASED ON ROCK MASS RATING CLASSIFICATION IN TASANGKA AREA, JAYAPURA CITY. Program Studi S1 Teknik Pertambangan Universitas Papua [Internet]. 2026 Nov. 6 [cited 2026 Nov. 7];9(2):59-68. Available from: https://jurnal-intan.ac.id/index.php/intan/article/view/460