Imposing mine Superintendent Henry Richard Hancock substantially reorganized and developed the “Monster Mine” at Moonta.

Electrical merchant Alfred Gerard was also a concerned humanitarian, and a worker for Aboriginal welfare.

A manufacturer of agricultural machinery, Alfred Hannaford was also an inventor who devised a pickling machine.

Howard was a nurseryman and great promoter of subterranean clover. His discoveries have benefited farmers’ pastures throughout South Australia.

A union leader, parliamentarian and egalitarian, Andrew Alexander Kirkpatrick pushed for equal rights for women.

Horribly wounded twice in World War One, the tenacious Hawker went on to be a pastoralist and parliamentarian.

Charles Duguid was a medical practitioner and champion of the underdog who spent many of his 102 years as a worker for Aboriginal advancement.

Dennis was a poet, journalist and satirist, renowned for The Songs of a Sentimental Bloke, the bestselling book of Australian poetry.

Though hampered by a physical disability, Davey became a psychologist and educationist who worked untiringly for social justice.

Essington Lewis was a hard-working industrialist who substantially developed and expanded B.H.P., and was Director-General of Munitions during the Second World War.

A printer and publisher, Hassell was devoted to the immaculate ‘embellishment of books’.

The music of unconventional musician and composer Hooper Josse Brewster Jones was as distinctive as his name.

Founder of the Australian Inland Mission and Royal Flying Doctor Service, Flynn was a practical and restless innovator.

Hundreds of millions of people have lived longer and healthier lives, thanks to medical scientist, Nobel Prize winner and penicillin pioneer Lord Florey.

Margaret Graham was an outspoken and forthright nursing sister and army matron with a strong sense of justice.

A forestry scientist by profession, Norman Jolly was also an accomplished scholar known for his integrity and keen critical faculty.

A singer of both bush ballads and classics, Dawson was the first to record ‘Waltzing Matilda’.

Robert Barr Smith had a genius for business. He was also a generous philanthropist, though his modesty dictated that much of the funding was dispensed anonymously.

Irascible yet open-minded engineer, industrialist, and ideas man Sir Claude Gibb was responsible for the design of the Centurion tank.

Sir Douglas Mawson became famous as an Antarctic explorer, but the geology of South Australia was his life’s work.

Motor car manufacturer and industrialist Sir Edward Holden gave his name to a car, albeit posthumously.

Sir Hans Heysen was a masterly artist, the immortaliser of the gum tree on canvas, and a dedicated conservationist.

At the end of his long life, newspaperman Sir Lloyd Dumas described himself as simply ‘the luckiest man in the world’.

His versatility as actor, dancer, producer and choreographer, coupled with flamboyance and wit, made Sir Robert Helpmann a household name.

Jacobs was a businessman, but also a warm and generous philanthropist with no interest in personal wealth.

Abstemious but easy-going, Sir Sidney Kidman was a pastoralist and philanthropist who made friends easily.

A conscientious and gifted forestry administrator, Walter Gill was also an enthusiastic nature photographer.

Surgeon William Anstey Giles came from pioneering stock, but was a pioneer himself in medical literature.