Mine the whole area instead

mine.lua

@@ -42,7 +42,7 @@ local function mine(mine_rows, mine_row_length)
     print("Mining row " .. i .. " of " .. mine_rows)
     mine_row(mine_row_length)
     robot.turnLeft()
-    if mine_n(3) ~= 3 then
+    if mine_n(1) ~= 1 then
       print("Unable to continue mining rows")
       return
     end
@@ -56,4 +56,4 @@ local rows, row_length = ...
 
 print("Will mine " .. rows .. "x" .. row_length .. " rows")
 
-mine(rows, row_length)
+mine(rows, row_length)