Geological information on wells? Everything else seemed very abstract and logical and then there's this one specific thing.

Made me curious too, here's a law blog that explains why. https://smithblawg.blogspot.com/2014/04/why-wells-exploring-...

"This category was added after witnesses testified that geological maps based on explorations by private oil companies were not covered by “trade secrets” provisions of present laws. Details of oil and gas findings must be filed with Federal agencies by companies which want to lease Government-owned land. Current regulations of the Bureau of Land Management prohibit disclosure of these details only if the disclosure “would be prejudicial to the Government” (43 CFR, pt. 2). Witnesses contended that disclosure of seismic reports and other exploratory findings of oil companies would give speculators an unfair advantage over the companies which spent millions of dollars in exploration."

Ahhh, that must be about Mel's Hole. ;)