Not normally allowed
It can be, when hyphenated (e.g. carry-on luggage). The noun "carry on" (carry-on) refers to an item that is kept with the passenger on an airline flight. The adjective extends to anything of the permissible size.*The imperative/command "Carry on" means to continue as before being interrupted.
I'm sure it happens, and it's probably not actually illegal, but it's not Best Practice or even safe.
Probably never.
It is permissible to conceal carry a weapon while hunting
A forklift
Probably never.
Probably never.
The Carry Lift Group provide forklift trucks. They are fork lift truck training specialists. They also provide racking and storage solutions, forklift truck training and forklift truck hire.
With a forklift, carry the load on the uphill side.
Probably never.
To carry the main loading.
To carry the main loading.