# Relationship history for MSHA mine 1700556

Current hierarchy: **V B  Castellani; Kathleen  Herbert → Fletcher Granite Co → Sunset Avenue Quarry**

- 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:** John J  Lander Jr → Sunset Avenue Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Maine & New Hampshire Granite Corp → Sunset Avenue Quarry; 1981-07-01 to 1990-05-13; source msha-controller-operator-history
- **controller_controls_operator:** John J  Lander Jr → Maine & New Hampshire Granite Corp; 1981-07-01 to 1990-05-13; source msha-controller-operator-history
- **controller_controls_mine:** Pioneer International Ltd → Sunset Avenue Quarry; 1989-01-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Fletcher Granite Co → Sunset Avenue Quarry; 1990-05-14 to 2004-05-18; source msha-controller-operator-history
- **controller_controls_operator:** Pioneer International Ltd → Fletcher Granite Co; 1990-05-14 to 2004-05-18; source msha-controller-operator-history
- **controller_controls_mine:** Kathleen  Herbert et al → Sunset Avenue Quarry; 1999-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Fletcher Granite Co → Sunset Avenue Quarry; 2004-05-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kathleen  Herbert et al → Fletcher Granite Co; 2004-05-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** V B  Castellani  et al → Fletcher Granite Co; 2004-05-19 to current/open; source msha-controller-operator-history