The way I look at it is Black and White is a medium, not a genre nor a style. Photojournalism and Social Documentary, ah. la. Dorothea Lange, W. Eugene Smith, Robert Capa, etc., or Street photographers like Gary Winogrand, HBC, etc. worked in the medium. Landscape photographers, ah. la. Ansel Adams, Clyde Butcher, Brian Barnbaum work or worked in the medium of Black and White, although Barnbaum has worked in color also. Black and White is genre and subject invariant. Color photography is genre and subject invariant. I am not sure I would equate the photo essays of say W. Eugene Smith, "Country Doctor", "Dream Street the Pittsburg Project", "Minamata", "Jazz Loft Project", etc. to the documentation of a construction or engineering project.