Celebrations of Trevithick's Day were first staged in 1984 and has since attracted 30, 000 visitors annually.
"Basically, it's still a pipe and it's got a firing pin at the bottom, " Trevithick said.
Mr Trevithick is remembered for his Camborne road carriage, nick-named the "Puffin Devil", first tested in 1801.
Thousands of people are expected in Camborne later to celebrate its famous son Richard Trevithick, who invented high-pressure steam power.
Richard Trevithick was prolific with his ideas and inventions, leaving a legacy of a number of patents covering diverse fields.
Mr Trevithick was the first to successfully run a steam-powered engine pulling carriages on rails at Pennydarren, South Wales, in 1804.
Trevithick was also the first to successfully run a steam-powered engine pulling carriages on rails at Pennydarren, South Wales, in 1804.
Mr Smith, who is the former chief executive of the Trevithick Trust, said he hoped his honour will help increase awareness of Cornwall's archaeological wealth.
BBC: NEWS | UK | England | Cornwall | County honoured in new year list
The 2011 Trevithick Day celebrations take place on Saturday 30 April.
The annual Trevithick's Dance leaves Basset Street at 2.30pm with almost 100 adults dressed in the traditional Cornish colours of Black and Gold, dancing behind Camborne Town Band.
Camborne's Trevithick Day is an annual celebration of the heritage and mining heritage of the area, with the focus on its famous son Richard Trevithick, the pioneer of high pressure steam power.
The mortar has changed little since World War II and remains one of the simplest weapons to operate, which is why it is found at the lowest level of infantry units, said Joseph Trevithick, a mortar expert with Global Security.org.
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