Historically BLK's best production to date was the second half...

Historically BLK's best production to date was the second half of FY18 : 20,631oz for the Mar'18 quarter & 19,663oz for the Jun'18 quarter (40,294 oz combined).

In the context of the commentary at the bottom of page (1) of the guidance update, I got the impression the BLK BoD are expecting modest production of 30,000oz over the next 6 months....

"Blackham is 12 months into a 24-month transitional period....During the transition period, the Company is aiming to produce 60kozpa from it's existing free milling deposits."

It seems unlikely at this stage that they'll produce record gold of 40,300+ oz over the next (6) months. I wouldn't be at all surprised if the grade reconciliation issues persist when they're mining ore at Williamson.