# Relationship history for MSHA mine 4602446

Current hierarchy: **David Michael  Jamison; Petri E Koivula → CM Energy Operations LP → McDonald Fork Impoundment**

- 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:** Laurel Run Mining Company → McDonald Fork Impoundment; 1950-01-01 to 1993-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Occidental Petroleum Corp → McDonald Fork Impoundment; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Occidental Petroleum Corp → Laurel Run Mining Company; 1950-01-01 to 1993-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Laurel Run Mining Company → McDonald Fork Impoundment; 1993-07-01 to 2004-09-02; source msha-controller-operator-history
- **controller_controls_mine:** CONSOL Energy Inc → McDonald Fork Impoundment; 1993-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CONSOL Energy Inc → Laurel Run Mining Company; 1993-07-01 to 2004-09-02; source msha-controller-operator-history
- **operator_operates_mine:** Dynamic Energy Inc → McDonald Fork Impoundment; 2004-09-03 to 2017-03-27; source msha-controller-operator-history
- **controller_controls_mine:** James C  Justice II et al → McDonald Fork Impoundment; 2004-09-03 to 2009-05-06; source msha-controller-operator-history
- **controller_controls_operator:** James C  Justice II et al → Dynamic Energy Inc; 2004-09-03 to 2009-05-06; source msha-controller-operator-history
- **controller_controls_mine:** Mechel Oao → McDonald Fork Impoundment; 2009-05-07 to 2015-02-11; source msha-controller-operator-history
- **controller_controls_operator:** Mechel Oao → Dynamic Energy Inc; 2009-05-07 to 2015-02-11; source msha-controller-operator-history
- **controller_controls_mine:** James C  Justice II et al → McDonald Fork Impoundment; 2015-02-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James C  Justice II et al → Dynamic Energy Inc; 2015-02-12 to 2017-03-27; source msha-controller-operator-history
- **controller_controls_mine:** Scott  Kiscaden → McDonald Fork Impoundment; 2017-02-21 to 2025-10-02; source msha-controller-operator-history
- **operator_operates_mine:** CM Energy Operations LP → McDonald Fork Impoundment; 2017-03-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Kiscaden → CM Energy Operations LP; 2017-03-28 to 2025-10-02; source msha-controller-operator-history
- **controller_controls_mine:** David Michael  Jamison et al → McDonald Fork Impoundment; 2025-10-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David Michael  Jamison et al → CM Energy Operations LP; 2025-10-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Petri E Koivula et al → CM Energy Operations LP; 2025-10-03 to current/open; source msha-controller-operator-history