There are many titles available for download that forum visitors will have interest in, at

One title that is quickly rising to the top of the list is "Belt Bucket Elevator Design, Use and Care e-Book"

There are too many to list here, but a few more titles of specific interest are ...

"Dust Control Equipment & Methods e-Book"
"Bulk Materials Handling Introduction e-Book"

I hope you all find some great value in this lead.