# Relationship history for MSHA mine 3503772

Current hierarchy: **Amalgamated Minerals International Inc → Turner Gravel, Inc. → Moneypit II**

- 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:** Joseph  Christian → Moneypit II; 1992-12-12 to 2006-07-14; source msha-controller-operator-history
- **controller_controls_mine:** Amalgamated Minerals International Inc → Moneypit II; 2006-07-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Turner Gravel, Inc. → Moneypit II; 2011-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Amalgamated Minerals International Inc → Turner Gravel, Inc.; 2011-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joseph  Christian → Turner Gravel, Inc.; 2011-12-01 to 2006-07-14; source msha-controller-operator-history