This is the second color photo that I transitioned to black and white. To get a strong black and reduce the blue I increased yellow to +40 and orange to +40 in the grey scale window in Photoshop CS6. I also increased the black and contrast in the RAW window. This seemed to work but others may have other suggestions.
I’m experimenting with taking some of my high contrast color photos and transitioning them into grey scale. This is the first one I’m working with. I always welcome criticism and comments and particularly with this and future photos that I’ve transitioned.