# Relationship history for MSHA mine 0103331

Current hierarchy: **Vince  Labarbera → Landsdown Corporation → Landsdown**

- 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:** JohnCo Materials Inc → Landsdown; 2005-08-17 to 2019-05-16; source msha-controller-operator-history
- **controller_controls_mine:** Presley M  Johnston → Landsdown; 2005-08-17 to 2006-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Presley M  Johnston → JohnCo Materials Inc; 2005-08-17 to 2006-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Clatus K  Junkin → Landsdown; 2006-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clatus K  Junkin → JohnCo Materials Inc; 2006-06-01 to 2019-05-16; source msha-controller-operator-history
- **operator_operates_mine:** Landsdown Corporation → Landsdown; 2019-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Vince  Labarbera → Landsdown; 2019-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vince  Labarbera → Landsdown Corporation; 2019-05-17 to current/open; source msha-controller-operator-history