Hey Herb,
When I spoke with Frank Candido regarding the "extended" lengths of some of the holes he indicated that most of these cases were situations where they saw that they were still in the right material and so they continued drilling. Now, as we all know, being in the right material doesn't always translate to hitting a nugget but the longer the hole the greater chance of hitting one/some so let's keep our fingers crossed for the assays.
Best,
Scott