Black and white negative of visitors at the De Beers plant.

Black and white negative of visitors at the De Beers plant.

Black and white negative of visitors at the De Beers plant.

Black and white negative of visitors at the De Beers plant.

Black and white negative pares of visitors at the De Beers plant and clubhouse.

Black and white negative spares of a De Beers visitor at the grinding centre.

Black and white negative of a De Beers visitor at the grinding centre.

Black and white negative of Mr Browne on a visit to De Beers.

Black and white negative of Mr Browne on a visit to De Beers.

Black and white negative of Mr Browne on a visit to De Beers.