In the summer of 1975, Jeff was a 22-year-old college graduate working for his father on a job supervising a building site in New Jersey.

He kept track of trucks going in and out of the Jersey City site in the shadow of the Pulaski Skyway bridge and near the banks of the Hackensack River.

Most days were the same, but one he still vividly remembers after 50 years could solve one of the biggest mysteries of the 20th century.

He says he watched as Jimmy Hoffa’s body was pulled from the trunk of a Cadillac, mixed with rotting food and dissolved with chemicals.

Jeff, who is only using his first name for fear of retribution, told the Daily Mail how the remains of the notorious labor union boss were disposed of with rotten eggs and mutton from a spoiled shipment from New Zealand that arrived in Newark.

His bombshell revelation and the extraordinary tale are revealed in a new book by Hoffa’s attorney S.M. Chris Franzblau and lawyer Bruce Nagel, ‘The Last Mob Lawyer: True Stories from the Man Who Defended Some of the Biggest Names in Organized Crime.’

On July 30, 1975, former Teamsters President Hoffa was supposed to meet Anthony ‘Tony Pro’ Provenzano and Anthony ‘Tony Jack’ Giacalone at the Machus Red Fox Restaurant in Bloomfield Township, just outside of Detroit.

When the men didn’t show up, Hoffa called his wife Josephine from a pay phone to tell her that he’d been home for dinner by 4pm.

A witness then saw the 62-year-old speaking to several men before being driven away in a maroon car, the make of which has never been determined.

He was never seen again. All that was left at the scene was his Pontiac Grand Ville and questions that have never been answered.

The theories behind his disappearance have endured for five decades, inspiring TV shows, books, and even a video game.

The FBI has investigated and conducted multiple digs in New Jersey and other places over the decades, but came up empty-handed.

There are claims his body was ground up into pieces and thrown into a Florida swamp. Others believe he was buried underneath the former New York Giants stadium in East Rutherford, N.J. after he was executed by a hitman.

There was also speculation he was dropped from a plane over Michigan, while Netflix‘s hit 2019 film The Irishman claims he was killed by one-time ally Frank Sheeran, played by Robert De Niro.

Every time Jeff sees breaking news about the purported location of Hoffa’s body, he laughs, turns to his wife and says, ‘No it’s not there.’

‘You can’t find the body because they dissolved it,’ Jeff told the Daily Mail ‘They knew what they were doing.’

As the likelihood of anyone being charged over Hoffa’s disappearance dwindles by the day, Jeff believes he can put an end to the wild speculation with a story he’s kept secret for years.

In July of 1975, he was at the Jersey City building site when one one of his colleagues came over and asked: ‘What do you do for lunch?’

Jeff, young engineer at the time, explained that he would normally bring food in a brown paper bag and eat it while sitting on a bench.

‘He gave me $20 – twenty bucks in 1975 was $200,’ Jeff recalled. Then the man told him to go to a restaurant the next day and ‘not be here at lunchtime’.

The following day, Jeff was still working at lunchtime and wasn’t able to leave.

That’s when the sunny afternoon took a dark twist.

‘I saw a couple of black Cadillacs drive up to the job site. One had New Jersey plates and the other a Michigan plate. When I looked out the window I said, “What the hell is going on?”‘

Jeff walked outside and saw, from just a few yards away, a man open the trunk of the car with Michigan plates and remove a body.

The body was ‘completely wrapped in a white shroud’ and it looked like ‘a mummy,’ he remembered. ‘They dumped it right onto the rotten eggs and mutton.’

Jeff noted: ‘We were raising the ground, we weren’t digging down.’

There were at least a dozen other men there at the time. Some were in cars and others were standing, surrounded by dump trucks and bulldozers. He had never seen some of them before.

Jeff noticed one of the teamsters driving a dump truck filled with lime – a corrosive chemical substance and industrial mineral used to make concrete – that was poured over the body before it was covered in dirt.

The action was repeated several times, he recalled, before everyone left.

‘They went out the same way they came in, underneath the Pulaski Skyway and out through the junkyard, and that was the end of it,’ he said.

The entire ordeal took less than an hour.

When it was over, a foreman for the iron workers walked over to Jeff and said he was surprised to see him there.

He remembered the old man and how he laughed when he saw Jeff standing there after everyone cleared out.

‘What are you doing here?’ the foreman asked him. ‘You weren’t supposed to be here.’

A baffled Jeff replied simply: ‘Okay.’

Then the foreman asked: ‘Do you know who that was?’

‘No,’ Jeff replied.

‘That was Jimmy Hoffa,’ the worked said.

‘Who is Jimmy Hoffa?’ the college grad asked.

When he got home that night, he told his father about what he had witnessed. ‘I think he knew about it,’ Jeff said. ‘He told me never to tell anybody.’

A massive warehouse was later built on the site where Jeff said he saw the body being disposed.

In certain parts of the Garden State, it’s common to live among mobsters, Jeff said, but you ‘try and live a parallel life and try not to intersect too many times.’

‘You know who the boys are, who the bosses are, who the lieutenants are, the son-in-law,’ he said.

He said he knew the man who gave him the $20.

‘If you remember The Sopranos, he would have been Christopher,’ Jeff explained. ‘He wasn’t a high-up guy. He was a guy. He wasn’t one of the big shots.’

Jeff said his father, a Marine who served World War II, attended Cornell University, where he played football and studied engineering before becoming a world-class builder.

Now retired, Jeff followed in his father’s footsteps. He also studied engineering at Cornell before taking over the family business.

He described his father as a ‘tough guy’ who was ‘no nonsense,’ recalling that before he died, his dad would regularly reference the worksite.

‘Anytime we drove over the [Pulaski] Skyway, he would say, “Everyone’s hats off for Jimmy Hoffa,”‘ Jeff said.

‘It was a joke between me and him and that is what happened.’

After some time passed, Jeff shared the secret about that summer afternoon with his best friend and old college roommate from Cornell, Bruce Nagel.

‘I never really told anybody because first, no one would believe it, and secondly I don’t want to get killed,’ he laughed.

In August 2023, during a chance encounter, Jeff met attorney Chris Franzblau at a country club in northern New Jersey.

When they sat down to eat lunch after a round of golf, Jeff told him about that day in 1975.

‘I always wanted to tell you this story,’ Franzblau remembered Jeff telling him.

‘The only time I ever told anybody the story was to Bruce [Nagel], when we were roommates at Cornell, and my father, who told me never ever to tell anyone what I saw.’

Franzblau, a tenacious attorney who also goes by the name Sidney M., has represented some of the most notorious mobsters in history.

The 93-year-old represented Hoffa when he was president of the International Brotherhood of Teamsters and before his 1975 disappearance.

Other clients included mobsters Simone DeCavalcante, aka ‘Sam the Plumber,’ Anthony ‘Tony Pro’ Provenzano and Gerardo ‘Jerry’ Catena, the one-time acting boss of the Genovese crime family.

He also represented Meyer Lansky, an instrumental figure in shaping the mafia’s financial operations who some consider the ‘the genius’ behind the mob.

Franzblau said he first met Hoffa while representing Local 560, a large trucking union in Union City, New Jersey.

He described Hoffa as ‘very opinionated’ and ‘straight and all business.’ He was short in stature, but had a domineering presence.

‘He was a very disciplined person. There was no socializing,’ he said.

He recalled that the union boss did not like having to repeat something but was always a ‘gentleman.’

Franzblau was still a young attorney during one of his first meetings at Hoffa’s office in Washington.

After that, he said his interactions with Hoffa mostly happened at Teamster meetings held in New Jersey or at conventions in Florida.

In 1967, Hoffa spent time in federal prison in Lewisburg, Pennsylvania after he was sentenced to 13 years for jury tampering, fraud and conspiracy.

He served less than five years after a commutation from President Richard Nixon.

Hoffa had also been involved in organized crime that started during his early years as a Teamster.

He was last seen alive on July 30, 1975, when he was 62. His body was never found.

In 1982, he was declared legally dead.

Since then many theories have persisted.

In November 2021, the FBI obtained a search warrant to survey an area under the Pulaski Skyway to locate the remains of the former union boss after a tip came in from a man on his deathbed who claimed that he buried Hoffa’s body underground in a steel drum.

The search resulted in nothing.

Franzblau shrugged off all the speculation and told the Daily Mail that he has ‘no doubt’ Jeff’s eyewitness account is true.

Today, the legendary lawyer continues to practice with his partner.

More than 50 years later, Jeff is still amused every time he hears another theory about Hoffa.

Though he can’t elaborate, Jeff has zero doubt that he knows the truth.

‘I have had occurrences since then that have proven that I am correct that I don’t want to get into,’ he said.

‘When [Martin] Scorsese made the movie The Irishman, he was wrong. He should have turned to me. He wasn’t too wrong… but he was wrong.’

On that fateful day in 1975, did Jeff ever get to eat his lunch?

‘I don’t remember,’ he laughed, ‘but I did pocket the $20.’