Mining and resources is a distinct architectural setting for agentic AI: bounded autonomy under safety envelopes, partial-disconnection resilience, regulator-ready operational record by construction. This article walks the engineering deliverables for a mining-and-resources agentic AI architecture in 2026: tool catalogue tiered by safety envelope (read-only / advisory / supervised actuation / autonomous actuation); shift-handover loop integrating voice, paper, and structured data into the agent's working memory; fleet-coordination layer reasoning about cycle time, mixed-autonomy interaction, and stop-condition response; safety envelope as an explicit, inspectable, enforced, and exercised artefact; regulatory composition with NSW/Queensland/WA mines safety regimes, the AISI Voluntary Standard, and the Critical Minerals Strategy. AU-anchored, globally portable to Chile/Canada/SA/Indonesia/Brazil mining and to construction/heavy-haulage/ports/rail. 8 anti-patterns, 5-stage maturity ladder, composition with AISI eval pipeline, agent memory, human escalation, incident response, and agent-level circuit breakers.