# Relationship history for MSHA mine 4407243

Current hierarchy: **Metamining Inc. → Barnette Energy LLC → Tarpon Quarry**

- 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:** William D  Barnette  et al → Tarpon Quarry; 2006-04-28 to 2010-08-25; source msha-controller-operator-history
- **operator_operates_mine:** Barnette Energy LLC → Tarpon Quarry; 2008-10-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William D  Barnette  et al → Barnette Energy LLC; 2008-10-07 to 2010-08-25; source msha-controller-operator-history
- **controller_controls_operator:** Arlene V  Barnette  et al → Barnette Energy LLC; 2008-10-07 to 2010-08-25; source msha-controller-operator-history
- **controller_controls_mine:** Metamining Inc. → Tarpon Quarry; 2010-08-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Metamining Inc. → Barnette Energy LLC; 2010-08-26 to current/open; source msha-controller-operator-history