RE: Mambare11 Jan 2018 11:46
Let's step back a second.
Most (but not all) Tier 1 nickel mines at the moment are nickel SULPHIDE ores. The metallurgy is easier. The problem is that most of the sulphide deposits have been found and are being mined out. As a result, the majors are moving to trying the somewhat harder (but far from impossible) laterite deposits. The metallurgy is a bit more of a faff but its not impossible, as mines in production show.
Now DNI are developing a process that may be more successful/economic than the existing methods to deal with laterite deposits, but that's more the cherry on the cake. At the end of the day Mambare is a laterite deposit and you'd process it like other laterites.
As to PNG's inability (apparently) to host a laterite mine. Well they do actually already have one in production, high up in the hills, including a 135km slurry pipe down to the processes works at the coast near Madang. When you're dealing with an asset worth many billions of dollars a major doesn't blanch at difficult locations (e.g. the big porphyry at Wafi Golpu is hardly the most accessible place on the planet). You just cost it in and get on with it.
The laterite mine in PNG is Ramu Nickel. It has a reserve of 124Mt of ore at 1% Ni (so almost identical in size to Mambare's JORC)
http://www.ramunico.com/plus/list.php?tid=240
http://www.highlandspacific.com/current-projects/ramu-nickel
There's also a laterite mine at Goro (run by Vale) in New Caledonia which is just SE of PNG, again hardly the most accessible place on the planet (probably worse that Mambare given its island location). Goro contains 5.92 million tonnes of nickel metal. To give some sense of scale of this Vale asset, Mambare has a JORC resource that is 1.53 million tonnes of in-situ nickel metal, and that only covers 3% of the mineralised plateau. It's easily as big, if not bigger, than the Vale asset.
Now let's be clear. RGM aren't holding Mambare because they see themselves as eventually being a billion-dollar mcap company owning and running a mine at Mambare. This is an optionality play. At some point in the (probably not too distant future) a major on the hunt for its next big, Tier 1 scale nickel deposit will acquire Mambare and spend the billions in capex necessary to get this MASSIVE asset into production. What RGM's job is, is to hold Mambare as an option through the down-cycle (done), and then let it increase in value until it's bought. They might want to do some work on it to further daylight the scale of the asset (since only 3% of it has been drilled). A major would no doubt like to see some wide-spaced holes punched over the full plateau. And that's where RGM can now add value.