Worked on the GregTechCEu/GregTech-Modern repository to address a gameplay issue affecting resource progression by restoring the obtainability of Thorium and Magnesite ores. Using Java and game development modding techniques, updated the ore-generation logic so that Thorium now appears in dike veins and Magnesite in layered veins, allowing players to locate and utilize these resources once again. This targeted bug fix resolved a long-standing gap in ore availability, improving both resource accessibility and overall player experience while maintaining game balance. The solution was implemented as a focused patch, minimizing risk and ensuring clear documentation within the project’s codebase.