Students of the Mining Engineering Undergraduate Study Program, UPN “Veteran” Yogyakarta who are currently taking the fourth semester in the even semester of the 2023/2024 academic year carry out open mining practices (field lecture III) which are carried out in Dusun II, Gunung Gajah, Bayat, Klaten, Central Java. The location of the Open Mine Practice III field course is located in an area that is geologically unique because it is a meeting of three types of rocks: igneous rocks, sedimentary rocks, and metamorphic rocks. This makes the location ideal for open-pit mining practice. The location of Dusun II, Gunung Gajah, Bayat, Klaten, Central Java is located approximately 50 km from UPN “Veteran” Yogyakarta. This field course was attended by 162 students and guided by 11 supervisors who were divided into 3 (three) waves, namely wave 1: May 2-6, 2024, wave 2: May 6-10, 2024, and wave 3: May 10-14, 2024. The purpose of holding open pit mining practice is so that students can understand, comprehend, and apply the theories obtained in class during lectures, especially open pit mining. Problems faced in open pit mining systems generally include material management, heavy equipment selection, environmental management, and work safety. By carrying out this open pit mine practice, every alumni of the Mining Engineering Undergraduate Study Program, Faculty of Mineral Technology, UPN “Veteran” Yogyakarta not only has theoretical competence but is also proficient in field practice, and is ready to apply their knowledge to the mining industry, especially open pit mines.

The material studied in this field course includes various practical activities of open pit mine planning such as: determining and mapping drill sites for mineral exploration; estimating the amount of mineral resources available and reserves that can be mined; identifying and mapping rock formations as well as topographic conditions and mine infrastructure; designing efficient and safe open pit mine layouts and designs; identifying fractures and analyzing the stability of mine slopes to ensure safe operations; select and apply appropriate rock breaking techniques for mining activities; measure soil strength using DCP (Dynamic Cone Penetrometer) and bearing capacity to assess soil bearing capacity for mining equipment; design drainage systems to manage mine water and prevent inundation that could disrupt mining operations; and determine the type and specification of heavy equipment suitable for mining operations.

Contributor: Ilham Firmansyah, S.T., M.T.

Editor: Ir. Faizal Agung Riyadi, S.T., M.T.