# Relationship history for MSHA mine 0700113

Current hierarchy: **Kenneth P  Adams; Joe Ann J Adams → M.L. JOSEPH SAND & GRAVEL INC. → PLANT #2**

- 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:** Joe Ann J Adams et al → PLANT #2; 1991-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** M.L. Joseph Sand & Gravel Inc. → PLANT #2; 2022-11-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joe Ann J Adams et al → M.L. Joseph Sand & Gravel Inc.; 2022-11-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth P  Adams et al → M.L. Joseph Sand & Gravel Inc.; 2022-11-14 to current/open; source msha-controller-operator-history