BCDrums wrote in

When we had our granite top installed, they glued it with epoxy. I
would guess the same epoxy would be used for silestone.

I am glad to hear that it worked (it DID work, didn't it?) Do you know
how many clips they used to secure the sink?

No clips were used. Epoxy on the sink and a whole whack of epoxy on small
pieces of plywood overlapping the edges of the sink where it would fit
within the confines of the cabinet. It is still holding after three
months.