>> this is a historic day for tulsa and for our country as we begin a test excavation in oak lawn cemetery. >> there's nothing abstract, there's nothing theoretical this isn't a research project. this is an investigation. >> scientists are set to finally break ground in the effort to find victims of the tulsa race massacre. >> they could get answers and closure. >> it should have been done well before now but it wasn't. that's a baton that's been handed to us, and it is not an easy race. if initial excavation, we focused on a location within oak leon cemetery we thought carried add high likelihood of being a