Moose.... You're thinking too much. No it means what its says. The structure is not vertical. Based that #7 intersected the mineralization at -45 degress drilling on a due east azimuth to get an approximate true width, you can can conclude two things about the strcuture where these holes intersected it:

1. The structure is dipping approximately 45 degrees in the opposite angle, i.e., dipping -45 degrees to the west;
2. The structure is trending aproximately north by north-east, since a due east hole hit it at a near enough perpendicular angle to believe that the intercpet of 51m represents true width.

Regards,

B.