The phrase "able to amass a" is correct and usable in written English.
It can be used when discussing someone's capability to gather or accumulate something, such as resources, wealth, or information.
Example: "The organization was able to amass a significant amount of donations during the charity event."
Alternatives: "capable of gathering a" or "able to collect a".
With no free agency, the 49ers were able to amass a dominating roster around Montana.
You won't be able to amass a budget war chest if growth doesn't pick up and unemployment stays high.
By melting down local coins and selling their silver to London bullion dealers, he was able to amass a few thousand dollars.
No driver will be able to amass a huge lead, because the lead will be trimmed back to 5 points after 26 races, anyway.
The higher inflation went, the higher interest rates climbed, the more I earned on my savings and the sooner I was able to amass a down payment for a house.
During its years of corrupt and uncontested power, the party was able to amass a formidable trust fund, which should ensure that its views get a good hearing in newspapers and on television.
After all, although Merah was in the sights of police "both as a petty criminal and a suspected jihadist" following at least two trips to the Afghanistan-Pakistan border region, he was nonetheless "able to amass an arsenal of weapons and carry out three separate killings," writes Alan Philps in U.A.E.'s The National.
Ian Mercer, the gunman's father who spoke before knowing a 14th weapon was found, questioned how his son was able to amass an arsenal that included handguns, a rifle and a shotgun.
He was able to amass all that firepower at home since his family owned and enjoyed shooting as a hobby, and buying so much ammunition over the Internet and at local stores did not cause anyone selling it to be the least bit concerned.
It remains unclear how he was subsequently able to amass such a huge amount of money in a short time.
As Snap becomes a larger company and is able to amass more of a cash pile, it'll be able to start picking off startups that can either fill out the company's ranks with talent or add products that will help make its core app even more sticky.
