Mudya, Dinda, AND 		Yudoko, Gatot.
" INCREASING OVERBURDEN PRODUCTIVITY ACHIEVEMENT BY USING LEAN SIX SIGMA FRAMEWORK: A CASE STUDY OF MINING ACTIVITY AT PT. BETA BY CONTRACTOR PT. DELTA" <em>Jurnal Darma Agung</em> [Online], Volume 32 Number 2 (1 May 2024)