Lin's quick rise showed him to be an effective organizer and ambitious bureaucrat.
Chuka Umunna, the shadow business secretary, said the steep rise showed the government had "massively shortchanged" taxpayers by significantly undervaluing the institution.
Such a dramatic rise showed that the actuary was playing catch-up with stricter calculations in the private sector of outstanding liabilities.
Many economists said this inventory rise showed that businesses were having trouble working down stockpiles in the face of sluggish demand.
Andrew Wallis, founder and chief executive of the anti-slavery charity Unseen, said the rise showed the reality of an underground trade driven by the exploitation of people.
Last week's surge saw the price climb steeply to 455p by the close, but the continuing rise showed that even at that value investors were keen.
Dean's rise showed it was possible to mount a credible electoral challenge from the left even in a country at war, where dissent has been marginalised by both the political and media establishments.
He said the industrial action this week, followed by a national demonstration organised by the TUC on Saturday under the slogan Britain Needs a Pay Rise, showed that the issue of low pay "will not go away".
