Linde LLC has been contracted once again to lift the world-famous balloons at Macy’s Thanksgiving Day Parade, by supplying more than 300,000 cubic feet of helium (He) for the celebrations.

This year marks the parade’s 90th event and Linde’s 22nd consecutive year providing all the He to inflate the balloons.

The gas is supplied from Linde’s Otis plant in Kansas, which is one of the largest in the world having been built in 1965.

He dedicated to the Parade begins at Linde’s Otis plant, where it is purified and liquefied before being shipped into a trailer for shipment to the corporation’s He trans-fill facility in Pennsylvania.

Pure He is then converted to gas and compressed into four high-pressure tube trailers that are trucked into New York City.

The balloons are then inflated the evening before the Parade and are topped off with He on the morning of the festivities.

The inforgraphic below details the journey.

Linde infographic helium parade day balloons

Source: The Linde Group

Each year, more than three and a half million people gather in New York City to watch the Parade, with over 50 million people throughout the US viewing the event from home. The Parade takes place on the 24th November.