# Relationship history for MSHA mine 1700670

Current hierarchy: **Mark  Nutter; Denise  Nutter → MS & D Gravel LLC → MS & D Gravel LLC**

- 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:** Sincyr Gravel Inc → MS & D Gravel LLC; 1999-02-01 to 2001-03-19; source msha-controller-operator-history
- **controller_controls_mine:** Joanne S  Sincyr → MS & D Gravel LLC; 1999-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joanne S  Sincyr → Sincyr Gravel Inc; 1999-02-01 to 2001-03-19; source msha-controller-operator-history
- **operator_operates_mine:** MS & D Gravel LLC → MS & D Gravel LLC; 2001-03-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Denise  Nutter et al → MS & D Gravel LLC; 2001-03-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Denise  Nutter et al → MS & D Gravel LLC; 2001-03-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark  Nutter et al → MS & D Gravel LLC; 2001-03-20 to current/open; source msha-controller-operator-history