# Relationship history for MSHA mine 4801584

Current hierarchy: **Neil A  McMurray; John W  Martin → M & N Equipment LLC → Paradise Road Gravel Pit**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Neil A Mc Murry → Paradise Road Gravel Pit; 2000-09-01 to 2002-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Neil A  Mc Murry → Paradise Road Gravel Pit; 2000-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Neil A  Mc Murry → Neil A Mc Murry; 2000-09-01 to 2002-05-31; source msha-controller-operator-history
- **operator_operates_mine:** M & N Equipment LLC → Paradise Road Gravel Pit; 2002-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Neil A  McMurray et al → Paradise Road Gravel Pit; 2002-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Neil A  McMurray et al → M & N Equipment LLC; 2002-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John W  Martin et al → M & N Equipment LLC; 2002-06-01 to current/open; source msha-controller-operator-history