# Relationship history for MSHA mine 5001613

Current hierarchy: **Cary  Williams; Scott  Greene → Big Sky Exploration LLC → Little Eldorado**

- 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:** Roberts Michael D & Ellen E → Little Eldorado; 1989-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Roberts Mining → Little Eldorado; 1993-06-01 to 2024-09-29; source msha-controller-operator-history
- **controller_controls_operator:** Roberts Michael D & Ellen E → Roberts Mining; 1993-06-01 to 2024-09-29; source msha-controller-operator-history
- **controller_controls_mine:** Steve  Cutler et al → Little Eldorado; 2021-02-18 to 2024-09-29; source msha-controller-operator-history
- **operator_operates_mine:** Big Sky Exploration LLC → Little Eldorado; 2024-09-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steve  Cutler et al → Big Sky Exploration LLC; 2024-09-30 to 2024-09-29; source msha-controller-operator-history
- **controller_controls_operator:** Cary  Williams et al → Big Sky Exploration LLC; 2024-09-30 to 2024-09-29; source msha-controller-operator-history
- **controller_controls_mine:** Cary  Williams et al → Little Eldorado; 2024-09-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cary  Williams et al → Big Sky Exploration LLC; 2024-09-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Greene et al → Big Sky Exploration LLC; 2024-09-30 to current/open; source msha-controller-operator-history