# Relationship history for MSHA mine 4703851

Current hierarchy: **Adam B  Kelley → Kelleys Mining Corp → Kelley 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

- **controller_controls_mine:** Elwyn  Kelley → Kelley Mine; 1950-01-01 to 2019-05-21; source msha-controller-operator-history
- **controller_controls_mine:** Nolan  Kelley → Kelley Mine; 2019-05-22 to 2019-12-31; source msha-controller-operator-history
- **operator_operates_mine:** KELLEY SAND & GRAVEL, INC. → Kelley Mine; 2019-06-17 to 2026-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Nolan  Kelley → KELLEY SAND & GRAVEL, INC.; 2019-06-17 to 2019-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Elwyn  Kelley → KELLEY SAND & GRAVEL, INC.; 2019-06-17 to 2019-05-21; source msha-controller-operator-history
- **controller_controls_mine:** Adam B  Kelley et al → Kelley Mine; 2020-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Adam B  Kelley et al → KELLEY SAND & GRAVEL, INC.; 2020-01-01 to 2026-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Regina  Pontow et al → KELLEY SAND & GRAVEL, INC.; 2020-01-01 to 2026-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Kelleys Mining Corp → Kelley Mine; 2026-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Adam B  Kelley → Kelley Mine; 2026-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Adam B  Kelley → Kelleys Mining Corp; 2026-05-01 to current/open; source msha-controller-operator-history