The earliest boxes were made of wood, and later ones of concrete; officers complained that the concrete boxes were extremely cold.
Officers complained that the concrete boxes were extremely cold. The earliest boxes were made of wood, followed by boxes made of concrete.
The earliest boxes were made of wood, followed by boxes made of concrete. Officers complained that the concrete boxes were extremely cold.
The earliest boxes were made of wood, followed by boxes made of concrete. Officers complained that the concrete boxes were extremely cold.