# Relationship history for MSHA mine 5001571

Current hierarchy: **Clayton  Lapp → L & L Mining Inc → L&L Mining**

- 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:** G H D Resources Partners Ltd → L&L Mining; 1988-08-01 to 1993-08-30; source msha-controller-operator-history
- **controller_controls_mine:** Shaffer W L → L&L Mining; 1988-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Shaffer W L → G H D Resources Partners Ltd; 1988-08-01 to 1993-08-30; source msha-controller-operator-history
- **operator_operates_mine:** Lapp & Sons → L&L Mining; 1993-08-31 to 2009-02-23; source msha-controller-operator-history
- **controller_controls_mine:** Ed L  Lapp et al → L&L Mining; 1993-08-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ed L  Lapp et al → Lapp & Sons; 1993-08-31 to 2009-02-23; source msha-controller-operator-history
- **controller_controls_operator:** Clayton  Lapp et al → Lapp & Sons; 1993-08-31 to 2009-02-23; source msha-controller-operator-history
- **operator_operates_mine:** L & L Mining Inc → L&L Mining; 2009-02-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Clayton  Lapp → L&L Mining; 2009-02-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clayton  Lapp → L & L Mining Inc; 2009-02-24 to current/open; source msha-controller-operator-history