A rescue deal has been agreed for Yorkshire-based Sirius Minerals.
The company's chairman hailed the outcome as having secured jobs and future benefit for the local community, wider region and the 海角视频.
Shareholders had been nervously waiting to hear whether the Anglo American rescue deal had been approved.
Following a tense investor meeting in London yesterday morning, the stock markets closed with shareholders remaining in the dark over the result.
The vote came after Sirius failed to raise the funds it needed for a fertiliser mine, forcing the board to recommend the £405m rescue package.
A delayed result typically suggests the numbers are too close to call - and the result came in shortly after 8.30pm last night.
When the vote was announced Sirius said the resolutions had been passed "by the requisite majorities".
Sirius chairman Russell Scrimshaw said: "The positive outcome from today's meeting secures a return for shareholders, and provides greater certainty in terms of safeguarding the project, protecting the jobs of our employees, and allowing the community, region and the 海角视频 to continue to benefit from the project."
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Shareholders who attended the meeting at the Honourable Artillery Company in the City of London were told without supporting the deal, the company would collapse.
They were being asked to vote in favour of the 5.5p per share offer, despite some paying much more per share when the company was growing.
But before the votes - which were recorded on pieces of paper handed out at the start of the meeting - several angry investors voiced their concerns to the board.
The anger came despite a major push by the 海角视频 suitor to win over families across the region in support of the deal.
Shareholders, a large proportion of whom are small individual investors rather than big institutions, stood to lose out heavily.
Many had bought their shares for as much as 25p, sinking their life savings into the project.
However, the board said that the deal was the only offer on the table and shareholders faced lose everything if they did not vote for it, with liquidation or administration the most likely outcome.
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One frustrated shareholder in attendance said he felt like "we're having a gun put to our head".
Mr Scrimshaw admitted it was a difficult time for all concerned, adding he was "disappointed at the abusive language" that he had read online before the meeting.
As a result of this, security at the Honourable Artillery Company was beefed up at Sirius's request, with strict searches, a ban on computers and tablets in force, and sniffer dogs in attendance.
If the company had gone into liquidation, investors were unlikely to get anything back, directors said. The deal would give them 5.5p for every share they own.
Several shareholders had questioned why the meeting was being held in London, and not around Yorkshire where most of the company's thousands of retail investors are.
Around 85,000 small shareholders had at one point put their money into Sirius.
During the meeting the board, which had backed the bid, was branded "stubborn and righteous" by one shareholder, while another called the offer an "insult".
Several investors questioned if Anglo American could have offered more for the business.
But the board also won support from some shareholders for what was a tricky choice, with one shareholder saying "it is only delaying the inevitable if we vote no today".