Rahman, A.P. and Alviani Hesthi Permata Ningtyas 2025. Analysis of Factor Causing Downtime on Drum Coolers at PT X. Journal Universitas Muhammadiyah Gresik Engineering, Social Science, and Health International Conference (UMGESHIC). 2, 2 (Nov. 2025). DOI:https://doi.org/10.30587/umgeshic.v2i2.10775.