Unite must decide whether to call industrial action today as talks aimed at averting strikes by fuel tank drivers resume.
The two sides have been talking for six days, but a proposed agreement reached last week was rejected by tanker drivers.
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Colo became a mother of three, grandmother of 16, great-grandmother of 12 and great-great-grandmother of three.
The district's director of homeland security has said officials are planning for 800,000 to 900,000 people to attend the ceremony.
The Supreme Court is set to decide on whether disabled travellers are legally entitled to have priority use of wheelchair spaces on buses.