"notable milestone" is correct and usable in written English.
You can use it to refer to an important event, achievement, or point in time. For example, "The completion of the first human genome sequencing was a notable milestone in genetic research."
"Even though it's a small number, it's a notable milestone," said Dr. Michael Thun, head of epidemiological research for the society.
The conclusion of the process of Global Consultations on International Protection, which involved states, legal experts, nongovernmental organizations, regional bodies, and refugees themselves, was a notable milestone for UNHCR.
The latter has just hit a notable milestone: "We're up to half a million downloads on iOS and are on course to replicate that on Android before the end of the year," says Robin Clarke from Fluid Football's publisher AppyNation.
When President Obama boards Air Force One and departs New York City on Thursday night, he will have hit a notable milestone: He will have held more than 100 fund-raising events for his re-election effort in less than a year.
But though these housing incentives have helped build nearly 20,000 apartments over two decades, the incentive program has only recently reached a notable milestone: for the first time, major projects are under construction outside the prime Manhattan market, including a 500,000-square-foot building on the edge of Downtown Brooklyn, near some of the strongest real estate markets outside Manhattan.
And it's another very notable milestone in the career of Winterbottom, who is amassing a substantial reputation as an important director, but on the basis of a remarkably eclectic body of work: Jude, Welcome to Sarajevo, Wonderland, The Claim, 24 Hour Party People and In This World are all very different-looking projects.
But it has passed some notable milestones.
Over the years, there have been notable milestones.
Alumni recalled notable milestones in the Nassoon experience, including the moment when you find out you're in the group.
Notable milestones include a fully autonomous sprayer in citrus in Florida with colleagues at Carnegie Mellon and Univ. of Florida.
In this paper, we highlight some of these notable milestones and achievements and forecast the future in polycrystalline ceramic laser materials.
