# Relationship history for MSHA mine 0103451

Current hierarchy: **Rodney  Mays → Mays Mining, Inc. → Knight 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

- **controller_controls_mine:** Thomas A  Lewis et al → Knight Mine; 1983-04-01 to 2012-11-04; source msha-controller-operator-history
- **operator_operates_mine:** Birmingham Coal & Coke Co., Inc. → Knight Mine; 2012-11-05 to 2020-03-11; source msha-controller-operator-history
- **controller_controls_mine:** Radar USA Holding Corp → Knight Mine; 2012-11-05 to 2017-05-21; source msha-controller-operator-history
- **controller_controls_operator:** Radar USA Holding Corp → Birmingham Coal & Coke Co., Inc.; 2012-11-05 to 2017-05-21; source msha-controller-operator-history
- **controller_controls_operator:** Thomas A  Lewis et al → Birmingham Coal & Coke Co., Inc.; 2012-11-05 to 2012-11-04; source msha-controller-operator-history
- **controller_controls_operator:** Robert A  Lewis et al → Birmingham Coal & Coke Co., Inc.; 2012-11-05 to 2012-11-04; source msha-controller-operator-history
- **controller_controls_mine:** Thomas A  Lewis et al → Knight Mine; 2017-05-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas A  Lewis et al → Birmingham Coal & Coke Co., Inc.; 2017-05-22 to 2020-03-11; source msha-controller-operator-history
- **controller_controls_operator:** Robert A  Lewis et al → Birmingham Coal & Coke Co., Inc.; 2017-05-22 to 2020-03-11; source msha-controller-operator-history
- **controller_controls_mine:** Rodney  Mays → Knight Mine; 2018-04-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mays Mining, Inc. → Knight Mine; 2020-03-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rodney  Mays → Mays Mining, Inc.; 2020-03-12 to current/open; source msha-controller-operator-history