03/06/2014 12:25 EST | Updated 05/06/2014 05:59 EDT

Memorial for victims of Newfoundland helicopter crashes expected by late summer

ST. JOHN'S, N.L. - The government of Newfoundland and Labrador says it expects a memorial for the victims of two helicopter crashes in Newfoundland to be unveiled by late summer.

Construction of the monument, which includes a spiralling stainless steel sculpture that features the names of the 23 victims of both tragedies, is underway.

The sculpture is intended to represent the aerial screw prototype of the first rotary-type flying machine envisioned by Leonardo da Vinci in the late 15th century.

The memorial is a tribute to the six offshore oil workers who died when a Universal helicopter crashed on March 13, 1985, as well as the 17 people killed when Cougar Flight 491 crashed on March 12, 2009.

It will be erected at Quidi Vidi Lake in St. John's.