Patent ID: 8721907

Claim:
A method for milling and inspecting an object, the method comprises: performing by a system that comprises a controller, an ion miller, an image processor and a first electron detector at least one iteration of a sequence that comprises: milling, by a particle beam from the ion miller, a first surface of the object, during a first surface milling period; obtaining, by the first electron detector, an image of a second surface of the object during at least a majority of the first surface milling period; wherein the object is expected to comprise an element of interest (EOI) that is positioned between the first and second surfaces; milling, by the particle beam, the second surface of the object during a second surface milling period; wherein each of the first surface milling period and the second surface milling period has a duration that exceeds 0.1 seconds; obtaining by the first electron detector an image of the first surface of the object during at least a majority of the second surface milling period.