TULSA, Okla. (AP) — The search for possible mass graves of Tulsa Race Massacre victims is set to begin.

The Oklahoma Archeological Survey is to begin subsurface scanning Monday afternoon in Oaklawn Cemetery in north Tulsa.

The process often called "ground-penetrating radar" is expected to continue through Thursday in the search for victims of the 1921 massacre that left as many as 300 dead on Tulsa's Black Wall Street .

The cemetery is one of three sites to be examined under an October declaration by Tulsa Mayor G.T. Bynum.

Bynum has said today's technology "is light years" ahead of what was a...