thanks Scott!
I just invented the steps on the fly. I started with the bleach bypass, because I thought the harsh look would work good with the metal, then I did cross process to add some color back, then I did glamour glow. each step was a duplicated layer of the bleach bypass. the top color process layer is only at 27% visible. then I merged the three layers, and used nik viveza with a control point on the top left to desaturate the color across the image from top to bottom.