Workers prepare to rescue trapped Chilean miners Editor's note: CNN.com will be streaming live from beginning to end the rescue attempts at a Chilean mine where 33 men have been trapped since August 5. Click here for full coverage on the Chile mine disaster.

[Updated at 8:33 p.m. ET] The capsule has been lowered - unoccupied - into the rescue shaft as part of final tests before the miners' rescue begins.

After the tests, the capsule will lower rescue personnel to the miners' refuge about 2,300 feet below the surface, one at a time. Chilean Mining Minister Laurence Golborne has said he hopes at least one miner will be brought to the surface by the end of the day.

[Updated at 8:24 p.m. ET] The capsule is dangling above the rescue shaft, and we're awaiting word on when a rescuer will be lowered into the miners' refuge. Chilean Mining Minister Laurence Golborne had said tests would be done before the rescue effort will begin.

[Updated at 8:14 p.m. ET] Less than an hour to go before rescuers may begin lowering fellow rescuers to the miners' refuge via the capsule that will be used to lift the miners to the surface, according to a timeline given earlier by Chilean Mining Minister Laurence Golborne.

To get an idea of the path that the rescue capsule will take between the surface and the miners' refuge, check out this interactive graphic, which also includes information about each of the 33 trapped miners. It will be updated throughout the rescue to reflect which miners have been lifted to the surface.

Also, this video shows the inside of the capsule and some of the preparations that rescuers were making earlier today.

The rescue capsule was put upright at about 7:50 p.m. ET Tuesday. Some rescuers are expected to be lowered to the miners

[Updated at 7:42 p.m. ET] At least another 80 minutes to go before rescuers may start to lower the rescue capsule to the miners, according to a timeline given earlier by Chilean Mining Minister Laurence Golborne.

CNN's Dr. Sanjay Gupta discusses the health risks that the miners face during and after their rescue, including issues such as the condition of their lungs and changes in pressure.

[Updated at 7:31 p.m. ET] CNN's Brian Todd tells us about Florencio Avalos, who is expected to be the first miner who will be brought to the surface:

[Updated at 7:12 p.m. ET] Tests will begin at the San Jose mine in Chile using the rescue capsule before the actual rescue, Mining Minister Laurence Golborne said. He estimated it would be at least two hours before the rescue effort starts.

[Updated at 7:01 p.m. ET] It will be at least another two hours before rescuers will lower the capsule half a mile below the ground to the miners, Chilean authorities say. Meanwhile, the first four miners to be rescued have been identified, according to CNN Chile: Florencio Avalos, Mario Sepulveda, Carlos Mamani and Juan Illanes.

[Updated at 6:41 p.m. ET] A mining rescuer will be the first person to descend, followed by a medical specialist, officials say.

Meanwhile, a UCLA emergency has talked to CNN about medical challenges that the miners could face during and after their rescue.

[Updated at 6:25 p.m. ET] The miner who recorded the daily activities of the trapped miners in Chile will be the first one rescued, Chilean President Sebastian Pinera says. The world will be watching as Florencio Avalos, 31, is extracted from the San Jose mine after 68 days of captivity, together with 32 others.

[Updated at 6:07 p.m. ET] The first member of the rescue team is expected to be lowered into the shaft around 7 p.m. ET/8 p.m. local time. A team of paramedics and rescuers will go down first to assess the situation.

Each miner will be hauled up in a capsule wearing an oxygen mask for the 2,000 feet ascent, which is expected to take around 15 minutes per person.

Chilean President Sebastian Pinera speaks to reporters Tuesday at the San Jose mine.

[Updated at 4:45 p.m. ET] President Sebastian Pinera arrives at the San Jose mine site Tuesday afternoon and tours the area before the start of the rescue.

"Today's the end of a long journey," Pinera said. "This story started as a possible tragedy, and we hope that it ends as a blessing."

Chile is a country that reacts well to adversity, the president said, addressing the crowd of international media that has gathered for the event.

Even so, he noted that the miners would not be the same once they emerged, just as the ordeal has had a profound effect on Chile.

Chilean rescue workers will be using this chamber to try and bring each miner up to the surface.

[Posted at 4:00 p.m. ET] After 68 days trapped underground in a mine in Chile, workers are prepared to begin rescuing the first of the 33 men.

Earlier in the day the concrete base built for the winch system at the San Jose Mine has hardened, paving the way for the rescue of the miners to start tonight, Mining Minister Laurence Golborne said.

The winch that will pull the trapper miners out in Chile will extract them at .7 meters (2.3 feet) per second, Health Minister Jaime Malanich said. In case of emergency, the speed of ascension can be increased to 3 meters (9.8 feet) per second.