# Relationship history for MSHA mine 4407396

Current hierarchy: **David  Ison → Black Cat Construction, LLC → Surface Mine No. 1**

- 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:** Energy, Incorporated et al → Surface Mine No. 1; 2015-12-28 to 2017-08-03; source msha-controller-operator-history
- **controller_controls_mine:** Energy, Incorporated et al → Surface Mine No. 1; 2017-08-04 to 2021-11-30; source msha-controller-operator-history
- **operator_operates_mine:** RIDGETOP DEVELOPMENT, LLC → Surface Mine No. 1; 2019-05-01 to 2021-10-13; source msha-controller-operator-history
- **controller_controls_operator:** Energy, Incorporated et al → RIDGETOP DEVELOPMENT, LLC; 2019-05-01 to 2017-08-03; source msha-controller-operator-history
- **controller_controls_operator:** Jeffrey K Mullins et al → RIDGETOP DEVELOPMENT, LLC; 2019-05-01 to 2017-08-03; source msha-controller-operator-history
- **controller_controls_operator:** Energy, Incorporated et al → RIDGETOP DEVELOPMENT, LLC; 2019-05-01 to 2021-10-13; source msha-controller-operator-history
- **controller_controls_operator:** WC Ridgetop Holding Inc et al → RIDGETOP DEVELOPMENT, LLC; 2019-05-01 to 2021-10-13; source msha-controller-operator-history
- **operator_operates_mine:** Black Cat Construction, LLC → Surface Mine No. 1; 2021-10-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** David  Ison → Surface Mine No. 1; 2021-10-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David  Ison → Black Cat Construction, LLC; 2021-10-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert S  Toller → Surface Mine No. 1; 2021-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert S  Toller → RIDGETOP DEVELOPMENT, LLC; 2021-12-01 to 2021-10-13; source msha-controller-operator-history