Evaluation of the technical condition of mining processing equipment with planned preventive maintenance at the San Joaquín 2 quarry of Mapeagre Cia. Ltda. Ciencias de la Ingeniería y Aplicadas, [S. l.], v. 9, n. 1, p. 30–40, 2025. DOI: 10.61236/ciya.v9i1.1061. Disponível em: https://investigacion.utc.edu.ec/index.php/ciya/article/view/1061. Acesso em: 4 jun. 2026.