Reports have surfaced that the men worried about cannibalism. Sepulveda said he never considered that, he simply hoped to die in his sleep. He even prepared for it.
"One night, I gathered all my things, my seat belt, my hard hat, and I thought, 'When I die, I want to die as a miner and when they find me, dignified, the world will say, "A miner died with his head held high."'"
"The miner has something very special," Sepulveda said. "Given all of the work circumstances that we've always had, we've always been very united in all aspects. The truth is, real truth is, we laughed a lot. We even had a good time because that was the way to stay alive."
One week after being buried alive, the miners started hearing drills cutting through the mountain. Most of the drills failed to reach the shelter. But then, on day 17, one broke through.
"It was a miracle. We hugged, we cried, we thanked God. We banged on the drill for an hour, hoping someone up there could hear us. We then tied little notes to the drill," Sepulveda said.
When rescuers pulled the drill back up, they found a crumpled piece of paper that read: "We're alive, in the shelter, all 33 of us."
But it too an additional seven weeks for the miners to be lifted out. During that time, Sepulveda was their cheerleader.
"I would tell them, 'Look, compadres, we will be fine, we will be happy and we'll blow out of here.'"
Cameras sent down by the rescuers showed Sepulveda's approach to the world: a mix of faith and laughter. Sepulveda had become a clown and a jokester, even caught on tape dancing around with the Chilean flag. To the outside world, he was a light-hearted tour guide in a dark underworld.
The first thing Sepulveda wanted to do when he left the hospital was go to the beach. No one who watched had any idea that they were about to see him strip down without warning and frolic naked in the water. With his little boy at his side, he dropped down to his knees and gave thanks.
"I adore you, God," he said. "And I promise I will never leave you, just like I promised you when I was buried alive."
Before the ABC News interview ended, he said: "Life is short. In one minute you can lose it. In one minute it can all be gone. Don't worry so much about money. Live your life. Live every second of it."
As those rescued last week are celebrating their second chance at life, 300 other miners who were not trapped and will no longer be able to work in the now-closed mine are protesting in hopes of receiving compensation for their lost income.
Sepulveda said he would return to the mines under certain conditions so he could finance his children's education.
"If a mine offers safety [and] a good contract [where] I will be respected as an operator, I will work again," he said. "I was born to work, to give my family education, safety and health, and give a good time to my kids. That is my dream. That is my project."