function addRewardPerShare(uint256 mntpReward, uint256 goldReward) onlyController public {
        require(totalMntpHeld > 0);

        uint256 mntpShareReward = (mntpReward * MAGNITUDE) / totalMntpHeld;
        uint256 goldShareReward = (goldReward * MAGNITUDE) / totalMntpHeld;

        mntpRewardPerShare = SafeMath.add(mntpRewardPerShare, mntpShareReward);
        goldRewardPerShare = SafeMath.add(goldRewardPerShare, goldShareReward);
    }