Ann: LSX: Takeover Offer for EganStreet by Silver Lake Resources, page-27

The reserve grade is this low because they were going to use wide drives (double jumbos) and then ore sorting to get the grade back up. There is some risk with ore sorting, but they were pretty conservative with the way they used the sorting results. If this didn't workout they could go back to the single jumbos they had in the PFS.

The more I look into this TO the more unimpressed I am with it from the perspective of an EGA shareholder.