# Relationship history for MSHA mine 3003371

Current hierarchy: **Jessica E  Hillman; Jodi J  Edger → R L CALLAHAN → ROY'S PIT**

- 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

- **controller_controls_mine:** Robert L  Callahan → ROY'S PIT; 1985-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** R L Callahan Inc → ROY'S PIT; 2001-05-01 to 2011-07-29; source msha-controller-operator-history
- **controller_controls_operator:** Robert L  Callahan → R L Callahan Inc; 2001-05-01 to 2011-07-29; source msha-controller-operator-history
- **operator_operates_mine:** R L CALLAHAN → ROY'S PIT; 2011-07-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jessica E  Hillman et al → ROY'S PIT; 2011-07-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jessica E  Hillman et al → R L CALLAHAN; 2011-07-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jodi J  Edger et al → R L CALLAHAN; 2011-07-30 to current/open; source msha-controller-operator-history