Im no expert on drilling mud, but I tend to relate drilling mud with clay, and I tend to relate clay with slippery when wet.
Industrial furnace slag works better than crushed limestone for covering a long dirt farm driveway.Cheaper too.
Some companies are making money doing this as well.
Drilling mud can definitely be slippery- in fact, a substance is sometimes added to “flush” the hole that is extremely viscous and slippery (and white in color- yes, it has an obscene slang term attached to it).