[TowerTalk] Augment?

[Warrenwolff]

 Greetings T-Talkers,

Unbelievable.  The folks are out there working on my tower foundation
at this very moment.  Included in the worker-crew is a fellow who has done
a number of comm tower installations.

He is saying I should consider adding something called Bentonite to
my trenches and rod "holes" to help out this rocky/gravely earth - - 
certainly no top soil here.

Comments, anyone?

Warren; W7WY