man-hour 人時

man hour 人時(ニンジ)とは一人で一時間に達成できる仕事の量。5:20 it takes the crew 36 man-hours just to wash and wax the 2,500-square-foot exterior. このトレーラーの外側を水洗いしてワックスをかけるだけで36人時が必要だ。

World's Most Expensive Rides
https://www.youtube.com/watch?v=Jr-JcqfYG2Ej  5:37 to produce one ounce of fine gold requires an average of 38 man-hours,,,　
shocking documentary the secret of gold trading
https://www.youtube.com/watch?v=uwAcsUju-DU  1:50 so far this winter, over 100,000 man-hours have been spent here in Boston.
Mounting Snow Causes Boston Roof Collapse
https://www.youtube.com/watch?v=nP3b0_fnPxQ  11:04 she and her staff spent two years and thousands of man-hours trying to analyze the financial condition of the 15 largest states.
State Budgets: Day of Reckoning
https://www.youtube.com/watch?v=VLuXgQKq1lc  0:25 If I work one volunteer hour, I'll get one of these. ここで一時間ボランティアをすれば、この硬貨一枚がもらえる。
The food here has no price, what they give is priceless