Because the only buildcraft addon that has ore processing (besides thermal expansion, mind you) is commonly misconceived as tripling ores, when in reality it actually 2.6658eyo893876876754787er8t75876387y69587 it (not the real number, i just don't know what the exact is)
Unless, of course, you're talking about thermal expansion's rich slag, which doesn't make consistent ore tripling.
Does this mod have a name?