# Relationship history for MSHA mine 4404962

Current hierarchy: **Craft Ewing Jr → J M G Coal Company → No 2**

- 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:** Elkins John A → No 2; 1977-11-01 to 1980-06-11; source msha-controller-operator-history
- **operator_operates_mine:** Little John Coal Corp → No 2; 1978-02-01 to 1980-06-11; source msha-controller-operator-history
- **controller_controls_operator:** Elkins John A → Little John Coal Corp; 1978-02-01 to 1980-06-11; source msha-controller-operator-history
- **controller_controls_mine:** El Paso Energy Corp → No 2; 1979-06-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Virginia Iron Coal & Coke Company → No 2; 1980-06-12 to 1980-07-15; source msha-controller-operator-history
- **controller_controls_operator:** El Paso Energy Corp → Virginia Iron Coal & Coke Company; 1980-06-12 to 1980-07-15; source msha-controller-operator-history
- **operator_operates_mine:** J M G Coal Company → No 2; 1980-07-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Craft Ewing Jr → No 2; 1980-07-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Craft Ewing Jr → J M G Coal Company; 1980-07-16 to current/open; source msha-controller-operator-history