BRIEY, France — Almost four years after a fire gutted the more than 850-year-old Notre Dame Cathedral in Paris, the monument is slowly being pieced back together. With a reopening date set for December 2024, workers are carving statues and cranes are lifting stones to repair the vaulted ceilings. And about 200 miles away, at an industrial wood workshop in rural eastern France, carpenters are assembling what will become the cathedral’s new spire.