# Relationship history for MSHA mine 4606912

Current hierarchy: **Michael C  Faykus → Prosperity Energy Inc → #1 Surface**

- 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:** Meredith Chester & Michael Faykus → #1 Surface; 1983-04-18 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bill Pack Lumber Company → #1 Surface; 1985-04-01 to 1985-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Pack Bill → #1 Surface; 1985-04-01 to 1985-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Pack Bill → Bill Pack Lumber Company; 1985-04-01 to 1985-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Prosperity Mining Inc → #1 Surface; 1985-08-01 to 1986-02-23; source msha-controller-operator-history
- **controller_controls_operator:** Meredith Chester & Michael Faykus → Prosperity Mining Inc; 1985-08-01 to 1986-02-23; source msha-controller-operator-history
- **operator_operates_mine:** Prosperity Energy Inc → #1 Surface; 1986-02-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Michael C  Faykus → #1 Surface; 1986-02-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael C  Faykus → Prosperity Energy Inc; 1986-02-24 to current/open; source msha-controller-operator-history