In Creative Black and White Photography (p. 58) Les McLean outlines a development regimen he learned from older press photographers, which he refers to as DD/FF, for dilute developer / fast film. Shoot Tri-X at EI 400, 800, or 1600 (or combination of these EIs on the same roll), then develop with D-76 diluted 1:30 (not a typo for 1:3), with inversion agitation for five minutes, then a six hour stand with the tank in a water bath at 24C / 75F. Fix and wash as normal. Les doesn't specify tank size, but suggests only one roll of film per tank due to the small amount of developing agent present. I'd probably start with a full liter to a single roll.
Has anyone else tried this? Has anyone tried with other film / developer combinations? I can certainly try it for myself to find out what I think, but I'd be interested in others' experiences, and thought posting it might spark some interest and inspire experimentation among APUGs curious folks. It's a way to enhance graininess. More contrasty subjects are suggested. I'm wondering what it does to tonality.
Les, please chime in if you have more to add.