CREATE TABLE table_1373542_1 (date_announced VARCHAR2, reported_cost VARCHAR2)

On what date was it announced that an asset was acquired for US$9 Million?
SELECT date_announced FROM table_1373542_1 WHERE reported_cost = "US$9 million"
SELECT "date_announced" FROM "table_1373542_1" WHERE "US$9 million" = "reported_cost"