The phrase "a productive hour" is correct and usable in written English.
You can use it to describe a specific hour during which you accomplished a significant amount of work or made progress on a task.
Example: "During my meeting this morning, we had a productive hour where we brainstormed new ideas for the project."
Alternatives: "an effective hour" or "a fruitful hour".
Back in February, on a layover at the Tampa International Airport in Florida, I had spent a very productive hour working at a storefront business center called Laptop Lane, which rents private office cubicles with desks, phones and computers offering high-speed Internet service.
Of their first meeting, he said: "It wasn't a very productive hour and it left me in no doubt as to where I stood and how she saw the role of the PCC, which didn't accord with my role".
This was before I discovered a good therapist, before I discovered Prozac as well as the automatic-hyphenation command that tightened all those ugly gaps between words, before I got married and had children and learned to live outside my own head, at least for a few productive hours a day.
A new study and infographic by Mavenlink, for example, shows that one in four small business owners believe each productive hour in a day is worth upwards of $500.
The WTH system reached maximum productivity rates of 3.9 oven-dried tonnes per productive hour (odt h−1) for the felling and bunching operation and 6.9 odt h−1 for the forwarding operation.
There's a good chance it will turn out to be the most productive hour of your day!
Remember that everyone's most productive hour is different.
Alun Wyn Jones had a productive half-hour back in the Test arena, but it would be harsh on the unheralded Andrew Coombs, a revelation in his first three Tests, were he not to start again at Murrayfield.
If you have 12 productive hours a day, 8 at your day job and 4 on personal projects, you still have 4 hours for fun, 1 for chores and 7 to sleep.
I might spend 100 hours playing that game, but they will be 100 productive hours within a holistic network of systems that I understand.
