original: the yellow disc represents the island 's history in phosphate mining .
simplifications: the yellow disc represents the island 's history in phosphate mining . the yellow disc you see on the chart is a representation of the island 's history in phosphate mining . the yellow disc represents the island 's history in phosphate mining . the island 's history is represented by the phosphate mining in the yellow disc . 1 . the yellow disc represents the island 's history in phosphate mining . the yellow disc represents the island 's history in phosphate mining . the yellow disc represents the island 's history in phosphate mining . the yellow flat round thing represents the island 's history in phosphate 1 mining .