What are /r/geophysics' favorite Products & Services?

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I don't know how much this will help but a lot of this type of work is done by geological engineers analyzing things like uniaxial compressive strength (so not necessarily 3D) of rocks. Here's a paper that may help. Checking some mining engineering journals may help with some of those values.

To those curious about why OP asks about difficult problems with easy to verify solutions, this plain English guide to blockchain will be illuminating.

skip GRASS unless it applies to your work. QGIS http://www.qgis.org/en/site/ is the open source/free equivalent to ESRI software. It actually is much more user friendly for editing, importing non-esri files (tables, etc) and geoprocessing is a breeze.

I think that books on the history / beginnings of geophysics are pretty rare. One book that I know of is a biography of Henri Doll (the top early scientist at Schlumberger)

https://www.amazon.com/Sixth-Sense-Michael-Oristaglio-ebook/dp/B07W67KYQD/ref=sr_1_2?dchild=1&qid=1597500269

I presume you mean a reading book rather than a textbook? If so I found Geophysics in the Affairs of Man quite interesting if you can find a copy. Not sure there’s a lot out there in the geophysics/seismology reading book genre though.