# Relationship history for MSHA mine 4609015

Current hierarchy: **Wendell R  Bias → 3-D Management Services, Inc. → Stockton No. 2**

- 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:** Peabody Energy Corporation → Stockton No. 2; 1998-05-19 to 2007-10-30; source msha-controller-operator-history
- **controller_controls_mine:** Wendell R  Bias et al → Stockton No. 2; 1998-07-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Colony Bay Coal Company → Stockton No. 2; 2003-12-04 to 2004-01-15; source msha-controller-operator-history
- **controller_controls_operator:** Peabody Energy Corporation → Colony Bay Coal Company; 2003-12-04 to 2004-01-15; source msha-controller-operator-history
- **operator_operates_mine:** 3-D Management Services, Inc. → Stockton No. 2; 2004-01-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wendell R  Bias et al → 3-D Management Services, Inc.; 2004-01-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Patriot Coal Corporation → Stockton No. 2; 2007-10-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patriot Coal Corporation → Colony Bay Coal Company; 2007-10-31 to 2004-01-15; source msha-controller-operator-history