Peter Park, of Olathe, was one of 43 people indicted last year in an alleged drug conspiracy that stretched from Lawrence to California, Canada and Texas.

Kansas City, Kan. ? Peter Park’s “Spiderman” moniker may play off his name, but as he testified Tuesday as part of a long-running federal drug trial whose defendants include two Lawrence twins, a web of connections unfurled.

In that web were multiple Kansas City-area businesses, Lawrence residents, a California connection and, allegedly, the three men left among the 43 co-defendants to stand trial. Park, 43, appeared while in federal custody to testify after having pleaded guilty to conspiracy in March 2013. Standing trial since April on charges including federal drug conspiracy are Lawrence twins Los and Roosevelt Dahda, and Justin Pickel, of San Lorenzo, Calif.

Park spoke of the early days of the alleged conspiracy, which later culminated in a swarm of 2012 arrests and the indictment of 43 people, whose ties include Lawrence and extend to California, Canada and Texas.

Park, a 1994 Kansas University graduate, testified that around 2005 he and a fellow alumnus, Wayne Swift, began using their business’ warehouse to receive and store marijuana for a pair of associates connected to a French-Canadian hockey player named Jean Francois Quintin. After the two associates were arrested in 2007 at their home just behind the one Park shared with his wife and two young children in Olathe, Park said Quintin invited him and Swift to continue doing business.

A courier who used a fake auxiliary gas tank to store marijuana continued to drop by California Connections Inc., a custom wheel wholesaler that Park and Swift opened in Olathe and later moved to Merriam and Kansas City, Kan. On Tuesday, Park testified that he and Swift once even met a small amphibious plane in a secluded northern Missouri landing strip, grabbing the product from the plane’s floatation devices.

Park said he found customers by word of mouth and one day in 2006, at a Kansas City Royals game, he found a new associate in Lawrence businessman Chad Bauman.

“I could see he was in the kind of business I was in,” Park said. “When you’re in the business you can pick it up pretty quickly.”

Bauman, who is also awaiting sentencing after pleading guilty in 2013, had more than $1.4 million in assets belonging to him and his wife, Carey Willming, seized during the investigation. Assistant U.S. Attorney Terra Morehead previously said that Los Dahda was introduced to Bauman around 2007 and the two began a joint business venture involving marijuana and cocaine.

On Tuesday, Park testified that Los Dahda had traveled with Bauman to California after Park and Swift helped facilitate a way to move high-grade marijuana from one of Bauman’s sources back to Kansas. This, Park testified, helped him and Swift pivot away from the Canadians after they amassed a large debt and the quality of the Canadians’ products became inconsistent.

Park said the drug business eventually supplanted cars as Park and Swift’s focus. He also said he was in charge of keeping records of shipments and transactions, filing the details away in ledgers later seized by investigators.

“To me it was just another venture or business, I guess, and what I did well was bookkeeping,” Park said. “I just treated it as a business.”

When they began working with Bauman to move marijuana from California, Park said they borrowed the Canadians’ idea of using auxiliary tanks for transport. Park said Swift, awaiting sentencing after pleading guilty in January 2013, custom made multiple steel tanks. Four such tanks towered among the piles of evidence that covered more than half the courtroom’s seating area on Tuesday.

“He took the idea and kind of supercharged it,” Park said.

Up to 80 pounds of marijuana or up to $500,000 would be stored in the tanks, Park testified. Eventually, he said, the co-defendants began employing a shipping company to transport larger loads of marijuana in crates.

Tuesday’s half-day session marked the first day of trial in U.S. District Court in Kansas City, Kan., since a June 10 recess. Park is expected to return to the stand Wednesday as trial continues all day. Another half-day session closes the week on Thursday before the trial resumes July 7.