A man bends downward while pointing towards a box holding a core sample, at the Alcoa Mining Company laboratory in Hillsboro. Other boxes of can be seen stacks on top of one another next to the man. Photographs from this series were published in the Oregon Journal on Sunday, February 24, 1946 (negative 2 of 8).

Vivian Lindsey (left) and Marcelline Mitchell sit at a table in front of two balances weighing ore. Next to each women is a table holding glass containers. This photograph was published in the Oregon Journal on Sunday, February 24, 1946 (negative 4 of 8).

Ervin Lindsey uses a photo cell color test to test ore at the Alcoa Mining Company laboratory in Hillsboro. Standing in front of a table, Lindsey makes adjustments on a machine, which can be seen next to a line of test tubes. This photograph was published in the Oregon Journal on Sunday, February 24, 1946 (negative 5 of 8).

Chemist Joseph D. Bryant places ore into a furnace at the Alcoa Mining Company Laboratory in Hillsboro. He holds the small beaker with a long metal rod. This photograph was published in the Oregon Journal on Sunday, February 24, 1946 (negative 1 of 8).

Two people look at a core same at the Alcoa Mining Company laboratory in Hillsboro. Other core sample boxes can be seen on both sides of the aisle, extending away from the camera. Photographs from this series were published in the Oregon Journal on Sunday, February 24, 1946 (negative 6 of 8).

Miss E.W. Martin (left), Vivian Lindsey, and Marcelline Mitchell stand in front of a long table at Alcoa Mining Company laboratory, Hillsboro. Laboratory equipment, used to extract silica, can be seen on table. This photograph was published in the Oregon Journal on Sunday, February 24, 1946 (negative 8 of 8).