Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_1057316_1 (operational_owner_s_ VARCHAR, build_date VARCHAR)

### Question ###
Who were the operational owners during the construction date of April 1892?

### Accurate SQL ###

SELECT operational_owner_s_ FROM table_1057316_1 WHERE build_date = "April 1892"