# Relationship history for MSHA mine 1516170

Current hierarchy: **Stimac Joseph → Neon Recycling Inc → #1 Site**

- 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:** First Security Alpha Ltd → #1 Site; 1987-09-01 to 1990-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Monroe Gale Et Al → #1 Site; 1987-09-01 to 1990-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Monroe Gale Et Al → First Security Alpha Ltd; 1987-09-01 to 1990-09-30; source msha-controller-operator-history
- **operator_operates_mine:** First Security Alpha Ltd → #1 Site; 1990-10-01 to 1992-01-06; source msha-controller-operator-history
- **controller_controls_mine:** Baldridge H Gene & Joe Weddington → #1 Site; 1990-10-01 to 1992-01-06; source msha-controller-operator-history
- **controller_controls_operator:** Baldridge H Gene & Joe Weddington → First Security Alpha Ltd; 1990-10-01 to 1992-01-06; source msha-controller-operator-history
- **operator_operates_mine:** Neon Recycling Inc → #1 Site; 1992-01-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stimac Joseph → #1 Site; 1992-01-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stimac Joseph → Neon Recycling Inc; 1992-01-07 to current/open; source msha-controller-operator-history