Tens of thousands of Iranians are absent because of long-running tensions between their Shiite nation and Sunni-dominated Saudi Arabia, friction exaggerated by the stampede. After preliminary rituals this week in Mecca at the Grand Mosque, Islam's holiest site, the pilgrims will move on Saturday in buses, by train or even on foot in debilitating temperatures exceeding 40 C (100 F) to Mina, about five kilometres east. They are following in the footsteps of their Prophet Mohammed who performed the same rituals about 1,400 years ago. The first day of hajj was traditionally the chance for pilgrims to water their animals and stock up on water. Then they proceed to Mount Arafat, several kilometres away, for the peak of hajj on Sunday. Mina becomes their base, where an expanse of white fireproof tents can accommodate 2.6 million pilgrims. Last September 24, Mina was the scene of the worst disaster in hajj history, when the stampede occurred as pilgrims made their way to the Jamarat Bridge for a stoning ritual. This year's stoning will start on Monday. Although Riyadh stuck with a stampede death toll of 769, data from foreign officials in more than 30 countries gave a tally almost three times higher -- at least 2,297. "What happened last year is unacceptable. I saw dozens of bodies," said Oumar Kante, a Malian army colonel who survived the crush and says better organisation would have prevented the suffering. Saudi Arabia announced an investigation but no results have ever been released. Still, a number of safety measures have been taken. Government facilities were moved out of Mina to free up space, the Saudi Gazette reported, while roads in the Jamarat area were expanded, the Arab News said. Officials have been issuing pilgrims with bracelets that store their personal data, after some foreign officials expressed concern about difficulties in identifying the stampede dead. AFP found pilgrims wearing the new bracelets which authorities aim to give to each of the more than 1.4 million faithful from abroad.