# Relationship history for MSHA mine 4000759

Current hierarchy: **Navajo Transitional Energy Company LLC → Navajo Transitional Energy Company, LLC → Mine #2 And 3**

- 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

- **operator_operates_mine:** Lucky Cumberland Mines Inc → Mine #2 And 3; 1950-01-01 to 1975-04-01; source msha-controller-operator-history
- **controller_controls_mine:** Lucky Cumberland Mines Inc → Mine #2 And 3; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lucky Cumberland Mines Inc → Lucky Cumberland Mines Inc; 1950-01-01 to 1975-04-01; source msha-controller-operator-history
- **operator_operates_mine:** Southern Energy Resources Company → Mine #2 And 3; 1975-04-02 to 1979-03-04; source msha-controller-operator-history
- **controller_controls_mine:** Marquette Company → Mine #2 And 3; 1975-04-02 to 1979-03-04; source msha-controller-operator-history
- **controller_controls_operator:** Marquette Company → Southern Energy Resources Company; 1975-04-02 to 1979-03-04; source msha-controller-operator-history
- **operator_operates_mine:** Summerfield Corp → Mine #2 And 3; 1979-03-05 to 1982-04-29; source msha-controller-operator-history
- **controller_controls_mine:** Turner Charles N → Mine #2 And 3; 1979-03-05 to 1982-04-29; source msha-controller-operator-history
- **controller_controls_operator:** Turner Charles N → Summerfield Corp; 1979-03-05 to 1982-04-29; source msha-controller-operator-history
- **operator_operates_mine:** Sequatchie Valley Coal Corp → Mine #2 And 3; 1982-04-30 to 2015-03-16; source msha-controller-operator-history
- **controller_controls_mine:** MidAmerican Energy Holdings Company → Mine #2 And 3; 1982-04-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** MidAmerican Energy Holdings Company → Sequatchie Valley Coal Corp; 1982-04-30 to 2015-03-16; source msha-controller-operator-history
- **controller_controls_mine:** Cloud Peak Energy Resources LLC → Mine #2 And 3; 2012-09-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Navajo Nation → Mine #2 And 3; 2013-12-31 to 2019-10-24; source msha-controller-operator-history
- **operator_operates_mine:** Sequatchie Valley Coal Corp → Mine #2 And 3; 2015-03-17 to 2019-10-31; source msha-controller-operator-history
- **controller_controls_operator:** Cloud Peak Energy Resources LLC → Sequatchie Valley Coal Corp; 2015-03-17 to 2019-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Navajo Transitional Energy Company LLC → Mine #2 And 3; 2019-10-25 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Navajo Transitional Energy Company, LLC → Mine #2 And 3; 2019-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Navajo Nation → Navajo Transitional Energy Company, LLC; 2019-11-01 to 2019-10-24; source msha-controller-operator-history
- **controller_controls_operator:** Navajo Transitional Energy Company LLC → Navajo Transitional Energy Company, LLC; 2019-11-01 to current/open; source msha-controller-operator-history