On the face of it NHC have pulled off deal of the decade....

On the face of it NHC have pulled off deal of the decade. BHP/MIT (BAM) abandon adjacent tenement despite knowing it contained the very highest grade of coking coal on the grounds the declining seam would become unviable at depth.
NHC grabs the ground, drills about 100 holes and JORC's 640million tons.
5 yrs later BAM pay $2.4B it take it back. But this top grade sells for $320/ton. At $2.4B NHC sold it for $3.75/ton. IF new drills prove resource is the 1.1B tons some are saying it is, then they sold it for $2.18/ton.
Soul Pattison are an ex advertising/media outfit who now do pharmasuiticals plus Ackland mine and port facility in Brisbane. I can understand them not wanting the hassle of starting a huge new (mainly underground)mine from scratch. BAM were the obvious buyers with all the required infrastructure in place next door.
My question is twofold: 1) Did SOL (who hold 60% of NHC)sell out too cheaply? 2) Will they now pay a massive dividend as others in the situation have?
The SP (beginning in March) did rise on talk that NHC were looking to sell. But hardly enough to compensate for the huge cash injection of 2.4B.