# Relationship history for MSHA mine 2401697

Current hierarchy: **Morris Bud → Bud Morris → Seven Mile Placer**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Rangeland Resources Inc → Seven Mile Placer; 1982-10-01 to 1983-08-16; source msha-controller-operator-history
- **controller_controls_mine:** Rangeland Resources Inc → Seven Mile Placer; 1982-10-01 to 1983-08-16; source msha-controller-operator-history
- **controller_controls_operator:** Rangeland Resources Inc → Rangeland Resources Inc; 1982-10-01 to 1983-08-16; source msha-controller-operator-history
- **operator_operates_mine:** Seven Mile Placer Partnership → Seven Mile Placer; 1983-08-17 to 1987-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Dennis  Miller et al → Seven Mile Placer; 1983-08-17 to 1987-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Dennis  Miller et al → Seven Mile Placer Partnership; 1983-08-17 to 1987-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Bud Morris → Seven Mile Placer; 1987-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Morris Bud → Seven Mile Placer; 1987-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Morris Bud → Bud Morris; 1987-04-01 to current/open; source msha-controller-operator-history