# Relationship history for MSHA mine 1519524

Current hierarchy: **Marty Jay  Gray → Gray's Excavating Inc → Gray's Excavating Inc Mine #5**

- 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:** Marty Jay  Gray → Gray's Excavating Inc Mine #5; 2000-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jim  Miceli et al → Gray's Excavating Inc Mine #5; 2010-07-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kentucky Mining Partners, LLC → Gray's Excavating Inc Mine #5; 2010-07-29 to 2010-12-19; source msha-controller-operator-history
- **controller_controls_mine:** Gary  Walls et al → Gray's Excavating Inc Mine #5; 2010-07-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Walls et al → Kentucky Mining Partners, LLC; 2010-07-29 to 2010-12-19; source msha-controller-operator-history
- **operator_operates_mine:** M3 Energy Resources → Gray's Excavating Inc Mine #5; 2010-12-20 to 2011-10-05; source msha-controller-operator-history
- **controller_controls_operator:** Jim  Miceli et al → M3 Energy Resources; 2010-12-20 to 2011-10-05; source msha-controller-operator-history
- **controller_controls_operator:** Douglas  McClain Jr et al → M3 Energy Resources; 2010-12-20 to 2011-10-05; source msha-controller-operator-history
- **operator_operates_mine:** Gray's Excavating Inc → Gray's Excavating Inc Mine #5; 2011-10-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marty Jay  Gray → Gray's Excavating Inc; 2011-10-06 to current/open; source msha-controller-operator-history