# Relationship history for MSHA mine 0801369

Current hierarchy: **John B  Jackson; Donald M  Haas → Tampa Groves Mining LLC → Tampa Groves Mine**

- 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

- **operator_operates_mine:** Tampa Groves Mining LLC → Tampa Groves Mine; 2008-09-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Donald M  Haas  et al → Tampa Groves Mine; 2008-09-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donald M  Haas  et al → Tampa Groves Mining LLC; 2008-09-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John B  Jackson  et al → Tampa Groves Mining LLC; 2008-09-08 to current/open; source msha-controller-operator-history