STUDY OF MINING OPTIMIZATION AT ACTIVE PIT A PT XYZ, BANGKA BELITUNG PROVINCE

• Main Author: Bima Yurdhika - Nim: 12114057 , Shobiya
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/30937
• Institution: Institut Teknologi Bandung

<p align="justify">Mining industry is an industry that utilizes non-renewable mineral resources therefore, it is always taking the limitation of location, type, quantity, and commodity quality. It encourages mining engineers to create an effective and efficient mine plan so that maximum profit can be reached with minimum cost by applying the concept of pit optimization. <br /> <br /> PT XYZ is one of the tin mining companies in Indonesia which plans to design a pit which is being mined by open pit method namely Pit A. This mining plan is consist of determitation of the ultimate pit limit with technical considerations to determine the amount of tin and waste that will be mined and feasibility analysis of active pit A expansion with the concept of pit optimization using Whittle software. <br /> <br /> The determination of the ultimate pit limit is conducted by considering the restricted zone boundary which is establized in the surrounding pit as the green area around the mine. By this limitation, the tonnage of tin ore that can be mined is 2,393.52 tons with overburden volume of 5,439,823.4 m3. <p align="justify"> <br /> <br /> Feasibility analysis of active pit A expansion is optimized by Whittle program based on Floating Cone method and Lerschs-Grossmann algorithm which produces pit boundary, tin ore and waste tonnage as output. Optimization results by Whittle program using the tin selling price of US$ 21,500, can’t give that output. It shows that the mining process in active pit A expansion can’t be proceeded economically. Although the active pit A can’t be optimized, but based on the results of data processing, the pit can be optimized or mined economically when the selling price of tin is raised at least 3 (three) from current price.