Recipes (nuclear reactors etc) have been modified to require zircaloy 4, however the zircalloy 4 recipe itself appears to be disabled and there is no way for me to craft it. I am using all mods included with "Very BZ".
I was able to have the recipe show with Foundry disabled (which of course had me disable Aluminum and Rusty's Locale Utilities). I had all other mods disabled for this.

Edit: I was able to get the recipe to enable by only disabling the Aluminum mod, even with all of my other mods enabled. So that appears to be the culprit.

Thank you for the report. I've made a few fixes in the latest release:
- Zircaloy 4 will now always unlock with zirconium processing.
- Zircaloy 4 should now properly be made in foundry, if enabled.
- I've added a ZirconiumRecipes chat command (no slashes) to unlock all recipes for this mod if for some reason reloading mods does not do it.

Works great now, thanks!