# Relationship history for MSHA mine 5000931

Current hierarchy: **Downstream Inc → FX Mining LLC → Royal T 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:** John Schnabel-Owner (Various Contr) → Royal T Mine; 1950-01-01 to 2011-04-03; source msha-controller-operator-history
- **controller_controls_mine:** John J  Schnabel → Royal T Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John J  Schnabel → John Schnabel-Owner (Various Contr); 1950-01-01 to 2011-04-03; source msha-controller-operator-history
- **operator_operates_mine:** Big Nugget Mine LLC → Royal T Mine; 2011-04-04 to 2012-02-29; source msha-controller-operator-history
- **controller_controls_mine:** John J  Schnabel → Royal T Mine; 2011-04-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John J  Schnabel → Big Nugget Mine LLC; 2011-04-04 to 2012-02-29; source msha-controller-operator-history
- **operator_operates_mine:** Upstream, LLC. → Royal T Mine; 2012-03-01 to 2015-09-03; source msha-controller-operator-history
- **controller_controls_mine:** Parker R  Schnabel → Royal T Mine; 2012-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Parker R  Schnabel → Upstream, LLC.; 2012-03-01 to 2015-09-03; source msha-controller-operator-history
- **operator_operates_mine:** Big Nugget Mine → Royal T Mine; 2015-09-04 to 2022-09-20; source msha-controller-operator-history
- **controller_controls_operator:** John J  Schnabel → Big Nugget Mine; 2015-09-04 to 2022-09-20; source msha-controller-operator-history
- **operator_operates_mine:** FX Mining LLC → Royal T Mine; 2022-09-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Downstream Inc → Royal T Mine; 2022-09-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Downstream Inc → FX Mining LLC; 2022-09-21 to current/open; source msha-controller-operator-history