M4.5 (m) earthquake, 32km deep, near OFFSHORE ANTOFAGASTA, CHILE. Shakes 1 tracked business to ≥ MMI IV — strongest est. MMI IV (light — felt indoors, no damage) at Compañía Minera Mantos de la Luna SA (14km). Watch the named operators for production-disruption headlines. Confidence — occurred 90%, intensity 77%, hits ticker 30%.