A miner takes part during a search for fellow miners missing after a landslide caused by Typhoon Mangkhut at a small-scale mining camp in Itogon, Benguet, Philippines September 17, 2018. REUTERS/Erik De Castro

A view shows heavy equipment used by rescuers who were saved after being trapped by a secondary landslide while retriving survivors from an earlier landslide caused by Typhoon Mangkhut at a mining camp in Itogon, Benguet, in the Philippines, September 17, 2018. REUTERS/Erik De Castro

A view of debris and destroyed houses at the site of a landslide, after super typhoon Mangkhut hit the country, at a mining camp in Itogon, Benguet, Philippines September 17, 2018. REUTERS/Erik De Castro

A resident walks on the side of the road debris and fallen trees caused by a landslide at the height of Typhoon Mangkhut that hit Bokod, Benguet in the Philippines, September 16, 2018. REUTERS/Erik De Castro

Buildings which were damaged in the 2008 Sichuan earthquake stand alongside a dry riverbed in the city of Beichuan, Sichuan province, China, April 6, 2018. REUTERS/Jason Lee SEARCH "BEICHUAN ANNIVERSARY" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A mountain road which leads to a minority village, destroyed in the 2008 Sichuan earthquake, is seen in Wenchuan county, Sichuan province, China, April 5, 2018. REUTERS/Jason Lee SEARCH "BEICHUAN ANNIVERSARY" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A vehicle drives past apartment blocks destroyed in a landslide caused by the 2008 Sichuan earthquake, at the foot of a mountain in the city of Beichuan, Sichuan province, China, April 4, 2018. REUTERS/Jason Lee SEARCH "BEICHUAN ANNIVERSARY" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY.

Weeds grow at the site of the old city district which was destroyed after a landslide caused by the 2008 Sichuan earthquake, at the foot of a mountain in the city of Beichuan, Sichuan province, China, April 6, 2018. REUTERS/Jason Lee SEARCH "BEICHUAN ANNIVERSARY" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A general view of abandoned church property in an area surrounded by land mines near Qasr Al-Yahud, a traditional baptism site along the Jordan River, near Jericho in the occupied West Bank, March 29, 2018. REUTERS/Ronen Zvulun

A general view of abandoned church property in an area surrounded by land mines near Qasr Al-Yahud, a traditional baptism site along the Jordan River, near Jericho in the occupied West Bank, March 29, 2018. REUTERS/Ronen Zvulun

Houses destroyed by landslide are seen in Hrvatska Kostajnica, Croatia March 14, 2018. REUTERS/Antonio Bronic

Shacks cling to a landslide-prone hill in the Balukhali camp for Rohingya refugees in southern Bangladesh, February 13, 2018. Picture taken February 13, 2018. REUTERS/Andrew RC Marshall

A search and rescue dog is guided through properties after a mudslide in Montecito, California, U.S. January 12, 2018. REUTERS/ Kyle Grillot TPX IMAGES OF THE DAY

Boulders surround a mud-filled property after a mudslide in Montecito, California, U.S. January 12, 2018. REUTERS/ Kyle Grillot

A mud-filled property after a mudslide in Montecito, California, U.S. January 12, 2018. REUTERS/ Kyle Grillot

A search and rescue dog is guided through properties after a mudslide in Montecito, California, U.S. January 12, 2018. REUTERS/ Kyle Grillot

A search and rescue dog is guided through properties after a mudslide in Montecito, California, U.S. January 12, 2018. REUTERS/ Kyle Grillot

A search and rescue dog is guided through properties after a mudslide in Montecito, California, U.S. January 12, 2018. REUTERS/ Kyle Grillot

A search and rescue dog is guided through properties after a mudslide in Montecito, California, U.S. January 12, 2018. REUTERS/ Kyle Grillot

A man walks down East Valley Road after a mudslide in Montecito, California, U.S. January 12, 2018. REUTERS/Kyle Grillot

Life hazard tape surrounds a property after a mudslide in Montecito, California, U.S. January 12, 2018. REUTERS/ Kyle Grillot

The 101 Highway is seen closed on both sides in Montecito, California, U.S. January 11, 2018. REUTERS/ Kyle Grillot

The 101 Highway is seen closed on both sides in Montecito, California, U.S. January 11, 2018. REUTERS/ Kyle Grillot

Damaged properties are seen after a mudslide in Montecito, California, U.S. January 11, 2018. REUTERS/ Kyle Grillot

Damage is seen after a mudslide in Montecito, California, U.S. January 11, 2018. REUTERS/ Kyle Grillot

Damaged property is seen after a mudslide in Montecito, California, U.S. January 11, 2018. REUTERS/ Kyle Grillot

A destroyed house is seen after a mudslide in Montecito, California, U.S. January 11, 2018. REUTERS/ Kyle Grillot

The remains of a house are seen after a mudslide in Montecito, California, U.S. January 11, 2018. REUTERS/ Kyle Grillot

Damaged property is seen after a mudslide in Montecito, California, U.S. January 11, 2018. REUTERS/ Kyle Grillot

A damaged vehicle is seen after a mudslide in Montecito, California, U.S. January 11, 2018. REUTERS/ Kyle Grillot

A search and rescue dog is guided through properties after a mudslide in Montecito, California, U.S. January 11, 2018. REUTERS/Kyle Grillot

Rescue workers search through properties after a mudslide in Montecito, California, U.S. January 11, 2018. REUTERS/Kyle Grillot

Damaged property pushed into a tree after a mudslide in Montecito, California, U.S. January 11, 2018. REUTERS/Kyle Grillot

Charred remains of a property after a mudslide in Montecito, California, U.S. January 11, 2018. REUTERS/Kyle Grillot

A search and rescue dog is guided through properties after a mudslide in Montecito, California, U.S. January 11, 2018. REUTERS/Kyle Grillot

A damaged house after a mudslide in Montecito, California, U.S. January 11, 2018. REUTERS/Kyle Grillot

Damaged properties after a mudslide in Montecito, California, U.S. January 11, 2018. REUTERS/Kyle Grillot

Houses damaged by a mudslide is seen after that the Storm Nate affected the country in outskirts of San Jose, Costa Rica October 6, 2017. REUTERS/Juan Carlos Ulate TPX IMAGES OF THE DAY

A general view of the mudslide at the mountain town of Regent, Sierra Leone August 16, 2017. REUTERS/Afolabi Sotunde TPX IMAGES OF THE DAY

A man looks at the landslide site during a rescue mission in Athwelthota village, in Kalutara, Sri Lanka May 28, 2017. REUTERS/Dinuka Liyanawatte

A man stands on top of a damaged bike during a rescue mission at the site of a landslide in Bellana village in Kalutara, Sri Lanka May 26, 2017. REUTERS/Dinuka Liyanawatte TPX IMAGES OF THE DAY

Aerial view of the mountain where the landslide originated after flooding and mudslides caused by heavy rains leading several rivers to overflow, pushing sediment and rocks into buildings and roads, in Mocoa, Colombia April 3, 2017. REUTERS/Jaime Saldarriaga TPX IMAGES OF THE DAY

Aerial view of the mountain where the landslide originated after flooding and mudslides caused by heavy rains leading several rivers to overflow, pushing sediment and rocks into buildings and roads, in Mocoa, Colombia April 3, 2017. REUTERS/Jaime Saldarriaga TPX IMAGES OF THE DAY

Aerial view of a neighborhood destroyed after flooding and mudslides caused by heavy rains leading several rivers to overflow, pushing sediment and rocks into buildings and roads, in Mocoa, Colombia April 3, 2017. REUTERS/Jaime Saldarriaga TPX IMAGES OF THE DAY

Aerial view of a neighborhood destroyed after flooding and mudslides caused by heavy rains leading several rivers to overflow, pushing sediment and rocks into buildings and roads, in Mocoa, Colombia April 3, 2017. REUTERS/Jaime Saldarriaga TPX IMAGES OF THE DAY

Aerial view of a collapsed road after a massive landslide and flood in Trujillo, northern Peru, March 22, 2017. REUTERS/Douglas Juarez TPX IMAGES OF THE DAY

Aerial view of the collapsed Viru bridge at the Pan American highway after a massive landslide and flood in Trujillo, northern Peru, March 22, 2017. REUTERS/Douglas Juarez

Aerial view after a massive landslide and flood in the Huachipa district of Lima, Peru, March 17, 2017. REUTERS/Guadalupe Pardo TPX IMAGES OF THE DAY

Men walk in area damaged by a landside after Hurricane Otto hit in Guayabo de Bagaces, Costa Rica, November 25, 2016. REUTERS/ Juan Carlos Ulate

Relatives and friends wait during a rescue operation for miners who were trapped at a copper mine after it was hit by a landslide near the southeastern city of Siirt, Turkey November 18, 2016. REUTERS/Sertac Kayar

Members of the Guatemalan Army search for victims at the site of a landslide that caused several casualties in Villanueva, on the outskirts of Guatemala City, Guatemala, September 7, 2016. REUTERS/Saul Martinez

A man reacts after losing members of his family during a landslide that caused several casualties in Villanueva, on the outskirts of Guatemala City, Guatemala, September 7, 2016. REUTERS/Saul Martinez

A man reacts after losing members of his family during a landslide that caused several casualties in Villanueva, on the outskirts of Guatemala City, Guatemala, September 7, 2016. REUTERS/Saul Martinez TPX IMAGES OF THE DAY

Firefighters search for victims at the site of a landslide that caused several casualties in Villanueva, on the outskirts of Guatemala City, Guatemala, September 7, 2016. REUTERS/Saul Martinez

A man observes what is left of his home after a landslide that caused several casualties in Villanueva, on the outskirts of Guatemala City, Guatemala, September 7, 2016. REUTERS/Saul Martinez

A child looks at the site where a landslide took place causing a trailer to fall on top of homes causing several casualties in Villanueva, on the outskirts of Guatemala City, Guatemala, September 7, 2016. REUTERS/Saul Martinez TPX IMAGES OF THE DAY

A general view shows the site where a landslide took place causing a trailer to fall on top of homes causing several casualties in Villanueva, on the outskirts of Guatemala City, Guatemala, September 7, 2016. REUTERS/Saul Martinez

Members of the Guatemalan Army search for victims at the site of a landslide that caused several casualties in Villanueva, on the outskirts of Guatemala City, Guatemala, September 7, 2016. REUTERS/Saul Martinez

A woman recovers belongings among debris from her house, which was damaged by a mudslide, in the aftermath of Tropical Storm Earl in the town of Huauchinango, in Puebla state, Mexico, August 8, 2016. REUTERS/Imelda Medina

Residents stand at their house, which was damaged by a mudslide, in the aftermath of Tropical Storm Earl in the town of Huauchinango, in Puebla state, Mexico, August 8, 2016. REUTERS/Imelda Medina