# Relationship history for MSHA mine 4608947

Current hierarchy: **Kenneth D  Coe → Marco Mining, Inc. → Still Run No. 12**

- 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:** Jeffrey K  Justus et al → Still Run No. 12; 1997-09-24 to 2004-12-20; source msha-controller-operator-history
- **controller_controls_mine:** R R D Inc → Still Run No. 12; 1998-08-01 to 2000-12-31; source msha-controller-operator-history
- **controller_controls_mine:** James E  Trent → Still Run No. 12; 2000-08-31 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Riverside Energy, Inc. → Still Run No. 12; 2002-01-30 to 2002-04-22; source msha-controller-operator-history
- **controller_controls_operator:** R R D Inc → Riverside Energy, Inc.; 2002-01-30 to 2000-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Century Energy Corporation → Still Run No. 12; 2002-04-23 to 2003-12-10; source msha-controller-operator-history
- **controller_controls_operator:** James E  Trent → Century Energy Corporation; 2002-04-23 to 2003-12-10; source msha-controller-operator-history
- **operator_operates_mine:** Ole Way Mining, Inc. → Still Run No. 12; 2003-12-11 to 2004-08-05; source msha-controller-operator-history
- **controller_controls_operator:** Jeffrey K  Justus et al → Ole Way Mining, Inc.; 2003-12-11 to 2004-08-05; source msha-controller-operator-history
- **operator_operates_mine:** Marco Mining, Inc. → Still Run No. 12; 2004-08-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth D  Coe → Still Run No. 12; 2004-08-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth D  Coe → Marco Mining, Inc.; 2004-08-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ira M  Simpkins → Still Run No. 12; 2004-12-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ira M  Simpkins → Ole Way Mining, Inc.; 2004-12-21 to 2004-08-05; source msha-controller-operator-history