Stored Procedure result is not showing in Datagrid pane in Toad for Oracle
I think you want an output parameter of the type sys_refcursor. Currently your cursor is assigned to a local variable, which gets destroyed when the procedure terminates.

CREATE OR REPLACE PROCEDURE FEEDERS_TO_MAKERS_MCB(
   OpNo CTS_OPERATIONS.OPERATIONNUM%Type 
   ,BName CTS_OPERATIONS.BLENDNAME%Type

   ,p_recordset OUT SYS_REFCURSOR

) 
AS
BEGIN
    OPEN p_recordset FOR

    SELECT ...
END;