Drilling, in model terms

How the sample model follows a drill campaign, using Frostline's 2026 program.

1. A drill program belongs to a property: dp-2026 on prop-frost. The drilling contractor is con-drill, with its rigs eq-rig1 and eq-rig2.
2. The program drills holes: FL-26-001 and FL-26-002. A hole embeds its downhole surveys and intervals.
3. Core from a hole is split into samples: S-100231 and S-100232.
4. A lab (lab-alp) returns an assay per sample: as-S-100231 and as-S-100232.
5. The assays feed a resource estimate (re-frost-2026), signed off by a qualified person (qp-dlee).

Each step is its own class, keyed and stored, so each step is its own page in the object browser. The model graph's Focus tab, on DrillHole, shows the chain in one picture.