# Relationship history for MSHA mine 0404088

Current hierarchy: **Thanks Elon LLC; Lazarus Mining LLC; David  Pennington → River Resources LLC → MT VERNON**

- 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:** Mount Vernon Claim → MT VERNON; 1950-01-01 to 2021-03-03; source msha-controller-operator-history
- **controller_controls_mine:** John  Hamilton et al → MT VERNON; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Hamilton et al → Mount Vernon Claim; 1950-01-01 to 2021-03-03; source msha-controller-operator-history
- **controller_controls_operator:** Charles B Kaiser et al → Mount Vernon Claim; 1950-01-01 to 2021-03-03; source msha-controller-operator-history
- **operator_operates_mine:** River Resources LLC → MT VERNON; 2021-03-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** David  Pennington et al → MT VERNON; 2021-03-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David  Pennington et al → River Resources LLC; 2021-03-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lazarus Mining LLC et al → River Resources LLC; 2021-03-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thanks Elon LLC et al → River Resources LLC; 2021-03-04 to current/open; source msha-controller-operator-history