CREATE TABLE table_56841 ("CERCLIS ID" TEXT, "Name" TEXT, "County" TEXT, "Proposed" TEXT, "Listed" TEXT, "Construction completed" TEXT, "Partially deleted" TEXT, "Deleted" TEXT)

What is the Construction that has a Listed 09/08/1983, and a Name of cecil lindsey?
SELECT "Construction completed" FROM table_56841 WHERE "Listed" = '09/08/1983' AND "Name" = 'cecil lindsey'
SELECT "Construction completed" FROM "table_56841" WHERE "Listed" = '09/08/1983' AND "Name" = 'cecil lindsey'