Paul 'Chook' Phillips had just finished planning his 60th birthday celebration hours before he was killed in an accident at the United Wambo mine, near Singleton, on Monday.
Tributes flowed from across the Hunter and beyond for the much-loved shotfirer, who was fatally injured in an incident involving a mobile processing unit (a specialised vehicle used in blasting operations) about 1.30pm.
The NSW Resources Regulator, which oversees the safety of the state's mines, has launched an investigation into the tragedy.
The mine site was handed back to the mine's manager, Glencore, on Wednesday, however, operations have not yet recommenced.
Mr Phillips, 59, was a father to three adult sons and a grandfather to one.
The eldest of five sons, Mr Phillips moved to Singleton when their father Bob took over the Percy Hotel in 1978.
"He met the love of his life, Trisha, and started dating when they were 15," Mr Phillips' brother, Ben, told the Newcastle Herald.
They married in 1988 and had three boys.
"Dad sold the Percy late in 88 and Paul stayed in Singleton to start his family," Ben said.
Trisha died suddenly in November 2017.
Ben described his eldest brother as a "bloke's bloke", who loved the annual trip to the Bathurst 12 Hour with his brothers, sons and nephews.
"He just confirmed he had booked the campsites only hours before his death on our group message. It would have been his 60th at February's event," Ben said.
In a statement, Glencore said Mr Phillips' loss was heartbreaking for all involved.
"Our thoughts are with all those who knew and cared for Paul," the company said.
"Paul was a valued member of the United Wambo team for a number of years, and his passing will be felt deeply across our business."
The Mining and Energy Union (MEU) said its members were devastated by the death of Mr Phillips, who had been a proud union member.
"Our thoughts are with his family, friends and workmates during this incredibly difficult time," the statement said.
"We also acknowledge the impact this tragedy has had on those who witnessed the incident and the broader workforce."
MEU officials and Industry Safety and Health representatives were on site on Wednesday to assist with the investigation into the circumstances of the tragedy.
"The union will continue to work with the relevant authorities to ensure a thorough investigation is conducted and that any lessons identified are acted upon," the statement said.
"Every worker has the right to return home safely at the end of every shift.
"The MEU will continue to support our members, the affected workforce, and the worker's loved ones in the days and weeks ahead."
Resources Minister Courtney Houssos also extended her condolences to Mr Phillips' family, friends and colleagues.
"This is a heartbreaking for the Upper Hunter community, and the loss will be felt across the NSW mining industry," she said.
"We understand investigations are underway, with emergency services and the Resources Regulator on site."
