We’re redesigning a 3-year pushback with 10 m benches and 165 mm holes, targeting 90 kt/day, and I need to lock in the right mix of DTH vs rotary rigs to hit 75% utilization without burning consumables… If you’ve run similar, what’s your practical penetration rate and bit life at 250–300 MPa UCS, and did onboard GPS/auto drill move the needle on powder factor and rehandle? I’m weighing capex against cycle time and maintenance hours, so real numbers matter more than brochures.