When procuring drilling equipment, you must prioritize drilling depth capacity and hole diameter to ensure they match your geological survey requirements. For gold exploration, Core Drilling Rigs are essential for obtaining intact samples, while Reverse Circulation (RC) rigs are preferred for faster, bulk sampling. Ensure the machine features a high-torque rotary head and a robust hydraulic system capable of handling hard rock formations. Additionally, verify the engine power (kW) and whether it meets local emission standards like Tier 4 or Euro V.