The Australian ASX announcement is here https://www.asx.com.au/asxpdf/20190820/pdf/447m90dmvkvltt.pdf
Dividend information on page 13
Amount : USD 0.78 (up from 0.63 last year)
Ex-dividend: 5 September
Conversion into sterling: 9 September
Payment date: 25 September
The dividend policy provides for a minimum 50 per cent payout of Underlying attributable profit at every reporting period. The minimum dividend payment for the June 2019 half year period is 53 US cents per share, or US$2.7billion.
The Board has determined to pay an additional amount of 25 US cents per share or US$1.3billion, taking the final dividend to a record 78 US cents per share. This is equivalent to a 73 per cent payout ratio (2018:69percent)
I had pencilled in 60¢ as my conservative projection, although BHP is not easy to forecast. The total for the year of 55+78¢ = 133¢, nicely above the 123¢ forecast by DigitalLook
[DL Forecast was 181p for the year. Subtract the January special of 79.5 = 101.5p as the normal annual dividend, which is about 123¢]