# Relationship history for MSHA mine 0102847

Current hierarchy: **Tuggle James A → M E C Inc → Hanna Mill Mine**

- 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:** M E C Inc → Hanna Mill Mine; 1990-01-01 to 1990-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Stimpson James T (Tommy) → Hanna Mill Mine; 1990-01-01 to 1990-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Stimpson James T (Tommy) → M E C Inc; 1990-01-01 to 1990-06-30; source msha-controller-operator-history
- **operator_operates_mine:** M E C Inc → Hanna Mill Mine; 1990-07-01 to 1990-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Nelson David R & James E Fortner → Hanna Mill Mine; 1990-07-01 to 1990-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Nelson David R & James E Fortner → M E C Inc; 1990-07-01 to 1990-12-31; source msha-controller-operator-history
- **operator_operates_mine:** M E C Inc → Hanna Mill Mine; 1991-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tuggle James A → Hanna Mill Mine; 1991-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tuggle James A → M E C Inc; 1991-01-01 to current/open; source msha-controller-operator-history