Leave mines in the masonry for what? What types of mines are there? In the case of wall-to-wall masonry blocks How should reinforced concrete columns be treated to replace mines with bricks? (Draw the structure for each
mine type)

In myanmar, six laborers, each making the equivalent of $ 2.50 per day, can produce 40 units per day. in china, ten laborers, each making the equivalent of $ 2.25 per day, can produce 48 units. in billings comma montana, two laborers, each making $ 60.00 per day, can make 102 units. based on labor cost per unit only, the most economical location to produce the item is china , with a labor cost per unit of $ . 05. (enter your response rounded to two decimal places.)