# Relationship history for MSHA mine 0404486

Current hierarchy: **Blue J F  Sheppard → Millennium Inc → Stewart Lithia 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:** Pala Gems Mines → Stewart Lithia Mine; 1980-12-01 to 1985-03-25; source msha-controller-operator-history
- **controller_controls_mine:** Swoboda E R → Stewart Lithia Mine; 1980-12-01 to 1985-03-25; source msha-controller-operator-history
- **controller_controls_operator:** Swoboda E R → Pala Gems Mines; 1980-12-01 to 1985-03-25; source msha-controller-operator-history
- **operator_operates_mine:** Gems Of Pala Inc → Stewart Lithia Mine; 1985-03-26 to 1991-01-08; source msha-controller-operator-history
- **controller_controls_mine:** Kontny Peter → Stewart Lithia Mine; 1985-03-26 to 1991-01-08; source msha-controller-operator-history
- **controller_controls_operator:** Kontny Peter → Gems Of Pala Inc; 1985-03-26 to 1991-01-08; source msha-controller-operator-history
- **operator_operates_mine:** Millennium Inc → Stewart Lithia Mine; 1991-01-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Blue J F  Sheppard → Stewart Lithia Mine; 1991-01-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Blue J F  Sheppard → Millennium Inc; 1991-01-09 to current/open; source msha-controller-operator-history