Mangkhut, known locally as Ompong, has recently been downgraded to a category-4 Atlantic hurricane.
Environmental Secretary Roy Cimatu announced the ban on unauthorized mining during a news conference Monday in Benguet province, where 54 of the 65 deaths occurred since Typhoon Mangkhut hit the Philippines on Saturday. Bus, ferry and rail services were suspended and nearly 900 flights were canceled at the city's airport, one of the world's busiest.
Police Director General Oscar Albayalde told The Associated Press that 20 had died in the Cordillera region, four in Nueva Vizcaya province and another outside of the two regions, as the typhoon battered the rice-growing and mountain area on Saturday.
Almost half a million people were evacuated from seven cities in Guangdong province, on China's southern coast, according to the Associated Press, where Typhoon Mangkhut was expected to make landfall later Sunday afternoon.
Residents were told to avoid Hong Kong's harbors, including the iconic Victoria Harbor, where storm surges have caused the water level to rise dramatically.
It has already left about 60 people dead in the Philippines when it passed through the day before.
The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) on Sunday lifted all storm signal warnings in the country, after Typhoon Ompong (Mangkhut) exited the country on Saturday night.
The storm skirted past China's semi-autonomous city of Hong Kong, where Mangkhut's renewed winds reached 117mph, rattling skyscrapers, toppling trees, and tearing scaffolding from construction sites. At least 30 died in landslides or by drowning, according to Philippine National Police.
Hong Kong's government has warned employers they could face prosecution if they don't recognise the dangers in demanding their employees come to work, or if they threatened to dock workers' annual leave for sheltering during the storm. It was the most powerful typhoon to hit Hong Kong since 1979, packing winds of 121 miles per hour.
With a massive raincloud band 900 kilometers (560 miles) wide, combined with seasonal monsoon rains, the typhoon could bring heavy to intense rains that could set off landslides and flash floods, the forecasters said.
The workers used pikes and shovels to dig into the mud Monday morning, with the use of heavy equipment limited on the soaked ground.
"It swayed for quite a long time, at least two hours", Elaine Wong said.