maximus emerging as a major force in iron ore, page-72

They are sub-contracted to crush and bene the ore, 300 mill over 10 years is a pretty good return.

http://www.asx.com.au/asxpdf/20071009/pdf/3150l76qpc95qr.pdf

"PMA has agreed a contract with Mineral Resources Limited worth more than $300 million over ten years, for the provision of ore crushing and beneficiation facilities in order to produce magnetite concentrate."

After 10 years wvl own the plant i.e the "t" in boot, transfer.

The use of subcontractors is common to reduce the upfront capex, even if the opex suffers a little.