The phrase "a legitimate operation that" is correct and usable in written English.
It can be used when discussing a process, activity, or business that is lawful and recognized as valid.
Example: "The company was able to prove that it was a legitimate operation that complied with all regulatory requirements."
Alternatives: "a valid operation that" or "a lawful operation that".
It's clear he and his own sons have helped turn Bronner's soap-making business into a well-organized, legitimate operation that has somehow managed to retain its social and ecological credibility in an increasingly scumbaggish corporate world.
Many recyclers run legitimate operations that absorb these costs and profit from refurbished equipment sales and fees charged for accepting old, unsalable material.
He wants to make The Pirate Bay a legitimate operation, and to do that he needs your help.
How can I tell if it is a legitimate operation or a "diploma mill"?
Madoff's alleged $50 billion Ponzi scheme had the appearance of being a legitimate operation.
Hilco hopes that it can build a legitimate Marley licensing operation that will be capable of generating $1bn annually.
"The current mission runs the risk of becoming part of the U.S.'s international military policy of finding regional gendarmes to play a tutorial role in countries Washington considers incapable of governing themselves," Emir Sader, a party leader, complained recently and "legitimates a military operation that overthrew a legitimately elected government".
And, in an accusation that extends his crime's shadow to the edges of the business where his brother and sons worked, prosecutors accused Mr. Madoff of using some of the money he gathered through his Ponzi scheme to support the supposedly legitimate wholesale stock trading operation that made his name on Wall Street.
Not only does it have a worldwide service and support operation that can rival the mainframe king, IBM, but it has a legitimate history of supporting Windows NT, and has experience with 64-bit operating systems already.
When inflation was soaring in the late 1970s, the search for stable stores of value led to a few legitimate, and many illegitimate, operations that lured retail investors into diamonds.
