SAO PAULO, Brazil -- A safety engineer at the World Cup stadium where a giant crane collapse killed two workers allegedly warned his supervisor of possible problems with the operation, only to have his concerns brushed aside, a labour union leader charged Thursday, as sniping over the accident heated up. Karl Malone Jersey . The incident has fed worries about Brazils capacity to host next years showcase tournament, as well as the 2016 Olympics, though authorities insist they will be ready for both. Sao Paulos Arena Corinthians was slated to be completed by the end of December, and workers have suggested that speed was a top priority on the construction site, with many working 12-hour shifts and skipping vacations. The stadium was initially scheduled to be part of the Confederations Cup earlier this year, but world footballs governing body FIFA scrapped the venue from the warm-up tournament because of financing problems before construction even started. Antonio de Sousa Ramalho, president of Sao Paulos civil industry workers association, told The Associated Press in a phone interview that supervisors pressed ahead with the operation to finish the roof despite several rainy days that soaked the soil. He said the engineer warned his supervisor that it appeared the ground was not stable enough to support the 500-ton piece of roofing. "To his surprise, he was told by the supervisor that nothing was wrong and work should continue," said Ramalho, who declined to provide the workers name for fear of possible reprisals. "They discussed the matter for a while but in the end the supervisors decision stood." Odebrecht, the powerful Brazilian construction company behind the stadium project and three other World Cup venues, strongly denied the claims, and a civil defence official said an initial inspection of the construction site a day after the accident showed no evidence the ground was unstable. "Odebrecht and Sport Club Corinthians clarify that there was no warning previous to the accident," the statement said. The company added that Ramalhos union does not represent most of the workers involved in the crane operation. Following a visit to the site Thursday, the civil defence official in charge of the inspection said there were no obvious signs that the ground was unstable. "When we looked at it, it didnt seem like the ground shifted, maybe just a few millimeters," Jair Paca de Lima said in a television interview. "Maybe after an analysis with the equipment we will know more." According to Brazilian media reports, investigators are also looking into human or mechanical error as possible reasons for the collapse. Lima said only the area where the accident happened will remain closed, but work can resume at most of the stadium as soon as Monday, when a three-day mourning period ends. Constructors will be allowed to clear the crane and the metal structure after getting clearance from civil defence authorities, which is expected to happen soon. The labour ministry later Thursday said constructors were prohibited from using the other nine cranes at the site until they can show "safety measures are in place and there is no more risk of accidents." Ramalho, the union leader, said workers had been pulling long hours for quite some time in an effort to get the stadium completed on time, a point confirmed Thursday by loader Sergio Almeida, who told the AP typical shifts were 12 to 13 hours long. Besides the Sao Paulo stadium, Odebrecht was involved in construction of the Fonte Nova stadium in Salvador and the Arena Pernambuco in Recife, both of which were delivered for this years Confederations Cup. It also renovated Rio de Janeiros Maracana Stadium, which will host the World Cup final. A small part of the roof at Arena Fonte Nova collapsed in May from weight of accumulated water from heavy rainstorm. At the time, officials denied any structural problems with the project and blamed a mistake by a worker who inspected the roof. FIFA said earlier Thursday it was waiting to learn more about the extent of the damage from Wednesdays accident. FIFA officials and other global soccer personalities are due in Brazil next week for the high-profile World Cup draw in the resort city of Costa do Sauipe. FIFA leaders have said repeatedly that there is no Plan B for next years tournament -- particularly since nearly 1 million tickets to the matches have already been sold. "It is too premature to make any detailed assessment on the situation of the Corinthians Arena as we are still awaiting the technical report to be able to evaluate the scale of the damage," FIFA said in a statement sent to The Associated Press. "We will be able to provide an update earliest next week following the FIFA Organizing Committee of the FIFA World Cup." Jose Maria Marin, the president of the local World Cup organizing committee, said he lamented the accident but was confident it would not significantly affect the opener in Sao Paulo on June 12. "Im certain that the stadium will be ready for the start of the World Cup," he told Brazilian media. Dante Exum Jersey .C. -- Benn Ferrieros familiar with scoring important goals, just not in back-to-back games. Pete Maravich Jersey . - Dominika Cibulkova erased three match points in the second set Wednesday and beat Agnieszka Radwanska 3-6, 7-6 (5), 6-3 in the quarterfinals of the Sony Open. http://www.jazzauthentic.com/ . JOHNS, N.LOS ANGELES - The Winnipeg Jets will try to keep their faint playoff hopes alive tonight with a tough road test against the streaking Los Angeles Kings. Fans can listen to the action on TSN Radio 1290 Winnipeg beginning at 9pm ct/10pm et. Winnipeg picked up only its third victory in 12 games on Thursday with a 4-3 triumph over the San Jose Sharks. That 3-6-3 slump has essentially knocked the Jets out of the playoffs as they trail the Phoenix Coyotes by nine points for the second wild card spot in the Western Conference with eight games to play. Blake Wheeler had a goal and two assists in Thursdays win, while Tobias Enstrom scored the winner with 3:36 to play. Andrew Ladd and Dustin Byfuglien also scored for the Jets and Al Montoya stopped 27 shots in the win. "We just tried to make one more play than they did and it worked out for us," Wheeler said. The Jets have split the first two of a five-game road trip. Ondrej Pavelec will return from a lower-body injury that has held him out since March 14. He has solid career numbers against Los Angeles, going 2-1-0 with a 2.02 GAA and one shutout in three games. The Kings return home red hot and look to capture a sixth victory in a row. The Kings have won 13 of their last 16 games overall, a span that began with an eight-game win streak from Feb. 6-10. Los Angeles then lost three in a row in regulation before claiminng the final two contests of a five-game homestand. Ricky Rubio Jersey. After building that momentum, the Kings hit the road for three in a row and bested a number of contenders in the Eastern Conference as wins over Philadelphia, Washington and Pittsburgh stretched Los Angeles road winning streak to a club record-tying eight straight. The Kings, who set the original mark from Dec. 18, 1974-Jan. 16, 1975, wrapped up the swing with Thursdays 3-2 decision over the Penguins. Alec Martinez and Jeff Carter had goals and Drew Doughty netted the winner early in the third frame. Backup Martin Jones stopped 35-of-37 shots for Los Angeles, which appears locked into third place in the Pacific Division following its successful swing. "Theyre all such good buildings and good teams," Kings coach Darryl Sutter said. "All three teams are in different places in their standings, so if you can get six points you take it." Los Angeles will play its next three at home and is likely to give No. 1 Jonathan Quick the start tonight. He is 2-2-0 with a 3.48 goals against average lifetime versus the Jets. The Kings split a pair of meetings with the Jets in Winnipeg earlier this season, with L.A. claiming the most recent encounter 3-1 on March 6. The Kings are 5-0-2 all-time at home versus the Jets franchise, which makes its first trip to Los Angeles since relocating from Atlanta. 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