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A mudslide hit Oso, Washington on March 22, 2014, devastating a small, remote community. NBC News covers the victims, first responders and others who have been personally affected by the tragedy, as well as the science behind the slide.

Last Body in Oso, Washington, Mudslide Reported Found

Washington Mudslide Families File Wrongful Death, Damage Claims

Body Found at Scene of Devastating Washington Mudslide

Washington Mudslide Workers Walk Off Job Washington Mudslide Workers Walk Off Job Washington Mudslide Workers Walk Off Job
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Washington Mudslide Workers Walk Off Job

After Deadly Mudslide, Town Holds Senior Prom After Deadly Mudslide, Town Holds Senior Prom After Deadly Mudslide, Town Holds Senior Prom
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After Deadly Mudslide, Town Holds Senior Prom

Dozens of Washington Schools at High Risk of Landslide: State

Officials End Active Search at Washington Landslide With 2 Still Missing

County Officials in Washington Landslide Area to Consider Building Ban

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Obama Visits Grieving Oso Community After Mudslide

Obama Praises Town's Strength Following Deadly Mudslide

Washington Mudslide Death Toll Up to 41

Washington Mudslide: Thirty-Nine Victims Now Identified

Washington Mudslide Death Toll Rises to 39

Washington Mudslide Death Toll Rises to 37

Isolated Town Still Waits for Slide-Wrecked Road to Open

Four More Mudslide Victims Identified, Seven Remain Missing

Mudslide Survivor Speaks Out: 'I Was Not Letting That Baby Go' Mudslide Survivor Speaks Out: 'I Was Not Letting That Baby Go' Mudslide Survivor Speaks Out: 'I Was Not Letting That Baby Go'
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Mudslide Survivor Speaks Out: 'I Was Not Letting That Baby Go'

Mother Who Survived Washington Mudslide Describes Harrowing Ordeal

Mudslide Survivor: 'Houses Were Exploding' Mudslide Survivor: 'Houses Were Exploding' Mudslide Survivor: 'Houses Were Exploding'
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Mudslide Survivor: 'Houses Were Exploding'

60 Seconds of Terror: Animation Shows Deadly Mudslide's Surge

Animation Shows Oso Landslide as it Happened Animation Shows Oso Landslide as it Happened Animation Shows Oso Landslide as it Happened
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Animation Shows Oso Landslide as it Happened

White House Says Obama Will Visit Town Wrecked by Mudslide

Death Toll in Washington Mudslide Climbs to 35, 31 Identified

Navy Chief Latest Fatality ID'd in Washington Mudslide

How Washington Mudslide Catastrophe Could Have Been Prevented How Washington Mudslide Catastrophe Could Have Been Prevented How Washington Mudslide Catastrophe Could Have Been Prevented
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How Washington Mudslide Catastrophe Could Have Been Prevented

'God Has Not Forgotten Us': Slide Victims' Services Begin

Fire Chief Opens Door on Mudslide's Emotional Trauma

Number of People Missing in Landslide Falls Again

Mudslide Survivors Stunned at Damage: Should They Have Been Warned?

Oso: Helping The Horses Left Behind Oso: Helping The Horses Left Behind Oso: Helping The Horses Left Behind
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Oso: Helping The Horses Left Behind

Reports Recommended Moving Homes From Washington Landslide Area

Death Toll in Washington Mudslide Rises to 30

'Almost Nonexistent' Chance of Washington Mudslide Survivors

Seattle's Sports Teams Go to Bat for Washington Mudslide Victims

'Really Cut Off': Mudslide Neighbors Struggle With Highway Closure

Washington Mudslide Death Toll Rises to 29

Funeral Home Near Washington Mudslide Copes with Burying More Dead

A Snapshot of How Those Killed In Mudslide Lived

Mudslide Death Toll Rises to 28

Mudslide Recovery Is Slow, Heartbreaking Work Mudslide Recovery Is Slow, Heartbreaking Work Mudslide Recovery Is Slow, Heartbreaking Work
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Mudslide Recovery Is Slow, Heartbreaking Work

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New Satellite Image Shows Vast Reach of Oso Mudslide

Miguel Almaguer Journeys to Edge of Mudslide Debris Miguel Almaguer Journeys to Edge of Mudslide Debris Miguel Almaguer Journeys to Edge of Mudslide Debris
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Miguel Almaguer Journeys to Edge of Mudslide Debris

Mudslide Claimed Three Generations of One Family

Death Toll Climbs to 27 in Washington Mudslide

Washington Mudslide Kin Need Help to Pay for Funerals: Governor

22 Identified as Missing After Washington Mudslide

Mudslide Death Toll Continues to Rise Mudslide Death Toll Continues to Rise Mudslide Death Toll Continues to Rise
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Mudslide Death Toll Continues to Rise

Mudslide Work Takes Toll on Medical Examiner's Office

Crews Unable to Remove Mud from Slide Site

Weather Conditions Improve for Mudslide Search, but Contaminants Remain

Death Toll From Washington Mudslide Rises to At Least 21

Churchgoers Pray for Mudslide Victims as Death Toll Climbs

Death Toll Rises in Washington Mudslide

Small-Town Washington Mayor Finds New Role After Mudslide

Limits to Development: When Should You Avoid Building at All Costs?

Number of Missing in Mudslide Drops Sharply as Death Toll Rises

Rain and Chemical Contamination Hinder Mudslide Search Efforts

Small but Resilient Oso Will Rebuild After Mudslide, Residents Say

Lives Lost: Eight Victims Identified in Washington Mudslide

'Very, Very Difficult' ID Process Slows News for Families

'Soup Ladies' Cook Up Comfort for Landslide Search Crews 'Soup Ladies' Cook Up Comfort for Landslide Search Crews 'Soup Ladies' Cook Up Comfort for Landslide Search Crews
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'Soup Ladies' Cook Up Comfort for Landslide Search Crews

Mudslide Death Toll Rises Mudslide Death Toll Rises Mudslide Death Toll Rises
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Mudslide Death Toll Rises

Mudslide Relief Donations Top $1.5 Million

Double-Barreled Blow: How the Oso Mudslide Went Down

Washington Mudslide: Learn How to Help

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Muddy Search Dog Rests After Hard Day's Work in Oso Recovery Effort

Officials Detail Mudslide Victim Reporting Process Officials Detail Mudslide Victim Reporting Process Officials Detail Mudslide Victim Reporting Process
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Officials Detail Mudslide Victim Reporting Process

Colorado Sending National Guard to Join Mudslide Search

Identification of Mudslide Victims Moves Slowly Identification of Mudslide Victims Moves Slowly Identification of Mudslide Victims Moves Slowly

Identification of Mudslide Victims Moves Slowly

What Started the Mudslide? Satellite Image May Offer New Clues

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Rescuers Keep Searching Despite Overwhelming Obstacles

Death Toll in Washington Mudslide Expected to Soar

Vietnam Vet William Welsh Is Confirmed as Latest Mudslide Victim

Mudslide Victim Wanted Right to Live Anywhere He Wanted

Official Washington Mudslide Death Toll Rises to 17

More Heavy Equipment Works Slide Site, But Dead, Missing Unchanged

Mudslide Death Toll to Rise 'Substantially,' Officials Say Mudslide Death Toll to Rise 'Substantially,' Officials Say Mudslide Death Toll to Rise 'Substantially,' Officials Say
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Mudslide Death Toll to Rise 'Substantially,' Officials Say

Spouses, Children, Nature Lovers: Who Are the Mudslide's Missing?

Baby Sanoah's Body Found in Mudslide Wreckage

Mudslide Search Team Shares Heartbreaking Stories

Family Who Once Escaped Fire is 'Grateful' After Surviving Mudslide

Washington Mudslide Nearly Kills Kids at Slumber Party Washington Mudslide Nearly Kills Kids at Slumber Party Washington Mudslide Nearly Kills Kids at Slumber Party
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Washington Mudslide Nearly Kills Kids at Slumber Party

Webcast: Washington Mudslide Questions Replay Webcast: Washington Mudslide Questions Replay Webcast: Washington Mudslide Questions Replay
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Webcast: Washington Mudslide Questions Replay

Hots: If We Find One More Person Alive, It's Worth It Hots: If We Find One More Person Alive, It's Worth It Hots: If We Find One More Person Alive, It's Worth It
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Hots: If We Find One More Person Alive, It's Worth It

Fire Chief Shares Story of 'Compassion and Dignity' Fire Chief Shares Story of 'Compassion and Dignity' Fire Chief Shares Story of 'Compassion and Dignity'

Fire Chief Shares Story of 'Compassion and Dignity'

Fire Chief's Heart Tells Him There Could Be Mudslide Survivors

Governor Says Town Near Washington Mudslide Is 'a Family'

#AskNBCNews: Your Washington Mudslide Questions Answered

Dayn Brunner On Recovering Sister From Mudslide Dayn Brunner On Recovering Sister From Mudslide Dayn Brunner On Recovering Sister From Mudslide
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Dayn Brunner On Recovering Sister From Mudslide

'A Sense of Relief': Body of Mudslide Victim Summer Raffo Found

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New Photos Show Different Angles on Mudslide Destruction

Mudslide Missing: One Nature Lover's Heaven Became Hell

First Washington Mudslide Fatality Is Formally Identified

Most Locals Aware of Mudslide Risk in 'Little Piece of Paradise'

Mudslide Survivor Thanks Her Rescuer With Big Hug

Families Grieve as Mudslide Rescue Hopes Grow Dim Families Grieve as Mudslide Rescue Hopes Grow Dim Families Grieve as Mudslide Rescue Hopes Grow Dim
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Families Grieve as Mudslide Rescue Hopes Grow Dim

Number of Missing or Unaccounted For in Mudslide Drops to 90