# Relationship history for MSHA mine 1519057

Current hierarchy: **Bill C  Smith → PLATINUM ENERGY LLC → 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:** Jack M May → 1; 2005-07-06 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Right Fork Energy Inc → 1; 2006-10-31 to 2007-02-14; source msha-controller-operator-history
- **controller_controls_operator:** Jack M May → Right Fork Energy Inc; 2006-10-31 to 2007-02-14; source msha-controller-operator-history
- **operator_operates_mine:** Netley Branch Coal Co Inc → 1; 2007-02-15 to 2008-03-23; source msha-controller-operator-history
- **controller_controls_mine:** Nathan  Williams → 1; 2007-02-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nathan  Williams → Netley Branch Coal Co Inc; 2007-02-15 to 2008-03-23; source msha-controller-operator-history
- **operator_operates_mine:** Blackberry Energy LLC → 1; 2008-03-24 to 2011-02-24; source msha-controller-operator-history
- **controller_controls_mine:** Nathan  Williams → 1; 2008-03-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nathan  Williams → Blackberry Energy LLC; 2008-03-24 to 2011-02-24; source msha-controller-operator-history
- **controller_controls_mine:** Thomas W  Roberts → 1; 2008-10-06 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** New Tech Mining Inc. → 1; 2011-02-25 to 2018-09-25; source msha-controller-operator-history
- **controller_controls_operator:** Thomas W  Roberts → New Tech Mining Inc.; 2011-02-25 to 2018-09-25; source msha-controller-operator-history
- **operator_operates_mine:** PLATINUM ENERGY LLC → 1; 2018-09-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bill C  Smith → 1; 2018-09-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bill C  Smith → PLATINUM ENERGY LLC; 2018-09-26 to current/open; source msha-controller-operator-history