Magma, based in Vancouver, British Columbia, is buying the latest stake with $29.5m in cash and the proceeds of bonds totalling about $70m, and repayable in seven years at 1.52% annual interest.
Magma aims to buy another 2.2% in March and has an option to gain further share through a capital investment of $15m before November 2011.
In November, Magma took an 8.6%
