Komatsu, which recently expanded its South Longview operations, manufactures equipment for the mining, forestry, industrial and construction industries.

Komatsu, the Japan-based company that bought Joy Global Inc.’s manufacturing plant in South Longview, is planning a $7.1 million addition with a new parts warehouse and associated offices.

Komatsu has hired Transet Co., the Longview-based contractor that earlier built Komatsu’s power lab facility, to do the project at 2400 MacArthur St.

The project will cover about 81,000 square feet, Transet President Chris Tucker said last week.

“It’s a big project,” he said. “There will be a lot of people working on it.”

Tucker referred requests for further information to Komatsu, whose media relations staff in Milwaukee was unavailable for comment by deadline.

Komatsu, which manufactures equipment for the mining, forestry, industrial and construction industries, recently expanded its South Longview operations with a 23,000-square-foot power lab facility valued at $6 million.

In interviews earlier this year, officials said it remained on track to return employment at the plant to more than 600 people, about where it stood before Joy Global began layoffs in late 2015.

The plant then was steadily hiring welders, machinists and assemblers.

Komatsu bought Joy Global’s manufacturing plant for $3.7 billion in 2017. Nucor Corp. in Charlotte, North Carolina, bought Joy Global’s steel mill for $29 million in 2016.

Komatsu now has 604 employees in Longview while Nucor employs 140 people, according to data from Longview Economic Development Corp.