You don't make it, you mine it.
No doubt to mine gravel to construct things with.
You mine gravel, sometimes flint is dropped when you break a block of gravel.
you mine flint from gravel
Flint is sometimes dropped when you mine gravel.
Recently in the 0.3.3 Alpha, Mojang added the ability to receive Flint from breaking Gravel. It is also possible to make Flint and Steel.
Beaches, mountains, roadcuts, gravel bars, rivers, lakes, mine dumps, gravel pits, landscaping rock; just keep your eyes to the ground.
Other than using gravel for building, gravel is useful to farm for flint. When you mine gravel with a shovel, there is a small chance that instead of dropping a gravel block, it will drop flint. Flint can be used in crafting recipes such as flint and steel as well as arrows
You can't currently get flint in Minecraft PE.
There is no mining industry now operating in Belgium. There is only quarrying for sand and gravel and some high quality limestone.
only if the retaining wall requests it. mine requested hamburger helper...
gravel