How Families Can Preserve Evidence for Future Mesothelioma Claims

📁 Why Evidence Preservation Matters

Mesothelioma may be diagnosed long after occupational or secondary asbestos exposure occurred. By the time a family investigates exposure, employers may have closed, job sites may have changed, coworkers may be difficult to locate and old records may have been discarded.

Federal Rule of Evidence 901 illustrates why source information can matter: authentication generally requires evidence sufficient to support a finding that an item is what its proponent claims it is. Keeping an original record together with information about who possessed it and where it came from can make later evaluation easier.

For the broader claim framework, visit the Mesothelioma Claims hub.

1️⃣ Start an Evidence Inventory

Create a simple inventory before reorganizing boxes, scanning photographs or moving files. Give each important item a short description and record its source.

Do not discard duplicates until you know whether they contain handwriting, dates, envelopes, stamps or other details that distinguish them.

2️⃣ Preserve Medical and Diagnosis Records

Keep pathology reports, biopsy records, imaging reports, oncology notes, operative records, treatment summaries and other documents related to diagnosis. Record the medical facility and approximate dates even if the complete file is not yet available.

Medical records can help document disease and chronology, but they generally do not establish which employer, job site, asbestos product or defendant caused a historical exposure. Keep medical and exposure evidence as separate but coordinated parts of the family file.

3️⃣ Save Employment, Union and Military Records

Employment evidence may help reconstruct where a person worked and when. Preserve pay stubs, W-2s, pension documents, personnel records, union cards, apprenticeship records, work orders, Social Security earnings information and military service or assignment papers when relevant.

An employment record can place a person with an employer but does not automatically prove exposure to every material or product used at that workplace. Preserve the record for what it actually shows.

4️⃣ Create an Exposure Timeline Without Guessing

Organize remembered employment and exposure chronologically. Separate exact dates supported by documents from approximate dates based on memory.

Writing “unknown” or “approximately” is more useful than creating false precision. Later records or witnesses may fill the gap.

5️⃣ Preserve Photographs, Letters and Paper Records

Keep original photographs, letters, certificates, manuals and other paper records when practical. The National Archives recommends careful handling and storage to prevent damage to family papers and photographs and provides separate guidance for digitization.

Before removing photographs from albums or writing on originals, consider whether the album arrangement, captions, handwriting or reverse side contains useful context. If you add notes, put them in a separate inventory rather than altering the original item.

6️⃣ Protect Digital Files, Emails and Messages

Digital evidence can include photographs, scans, email, text messages, voicemail files, calendars and electronic employment documents. Preserve the original file when possible rather than keeping only a screenshot or edited copy.

Federal Rule of Civil Procedure 37(e) addresses electronically stored information that should have been preserved in anticipation or conduct of federal litigation. It focuses on reasonable preservation steps when such information is subject to a preservation obligation. State rules and duties can differ.

If litigation is reasonably anticipated, avoid deleting accounts, resetting devices or changing automatic deletion settings without first determining what relevant information should be preserved.

7️⃣ Preserve Product and Job-Site Information

Old product packaging, manuals, invoices, catalogs, equipment records, job tickets and facility photographs can provide clues about materials used at a workplace. Preserve labels and identifying information without assuming that every historical product contained asbestos.

A manufacturer’s name on an old document does not by itself establish that a particular worker encountered that product. Product, site, task and time-period evidence may need to be connected later.

8️⃣ Record Witness Information and Firsthand Memories

Write down the names and current contact information of coworkers, supervisors, family members or others with firsthand knowledge. Note where the person worked, approximate dates and what the witness personally remembers.

Do not coach a witness or supply product names for the person to repeat. Preserve the witness’s own memory, including uncertainty. A contemporaneous note should identify who created it and when.

9️⃣ Keep Originals and Document Where Evidence Came From

When possible, keep the original item and use a copy for routine review. Record who provided the item, when it was received and whether anything was changed.

This source history can support later authentication. Rule 901 recognizes several authentication methods, including testimony from a witness with knowledge, distinctive characteristics and evidence concerning public records. Authentication, however, does not itself prove asbestos exposure, causation or liability.

See Chain-of-Custody Best Practices for Exposure Evidence.

🔟 Make Preservation Copies and Backups

Digitizing paper and photographs can reduce repeated handling and make backup copies possible. The National Archives recommends keeping originals after digitization because digital files have their own preservation risks and can be lost.

For important files, maintain more than one copy in separate locations. Use descriptive filenames and avoid overwriting the original scan when creating a cropped, enhanced or annotated version.

📦 Handle Physical Items Carefully

Keep papers and photographs in a stable, dry environment and avoid unnecessary handling. Do not laminate, tape, trim or permanently mount potentially important originals simply to make them look cleaner.

If a document is fragile, mold-damaged or otherwise deteriorating, consider archival preservation guidance before attempting repairs. A high-quality digital copy can reduce the need to repeatedly handle a fragile original.

⚠️ Do Not Collect Suspected Asbestos Yourself

Evidence preservation does not mean removing insulation, pipe covering, flooring, gaskets or other suspected asbestos-containing material from a building, workplace or old equipment. Disturbing suspected material can create unnecessary exposure and may violate property, workplace or environmental requirements.

Preserve photographs, location information, records and identifying details instead. Questions about inspection or sampling should be handled through appropriately qualified professionals and applicable safety procedures.

⚖️ When Litigation Is Reasonably Anticipated

Evidence-preservation duties become more important when litigation is pending or reasonably anticipated. Federal Rule 37(e) addresses loss of electronically stored information that should have been preserved and was lost because reasonable steps were not taken, when the information cannot be restored or replaced through additional discovery.

The rule does not demand perfect preservation of every electronic item. Its committee notes emphasize reasonable steps and recognize that the appropriate scope depends on circumstances. Once a claim is being seriously considered, obtain case-specific guidance before deleting potentially relevant records or disposing of important devices or files.

The related Evidence Preservation Letters page explains formal preservation issues in litigation.

🕊️ Evidence Preservation After a Family Member Dies

After a death, do not immediately discard work papers, old photographs, computers, phones, union documents, military records, medical correspondence or prior legal files before determining whether they may be relevant. Also preserve any prior lawsuit, asbestos trust, settlement or attorney documents.

Family members should document where the materials were found rather than reorganizing everything without a record of origin. If an estate is involved, authority over property and records may also need to be considered.

🚫 Evidence-Preservation Mistakes to Avoid

• Throwing away original records after scanning them.
• Writing new notes directly on historical photographs or documents.
• Cropping or enhancing a photograph without keeping the original.
• Guessing at dates, product names or manufacturers.
• Combining several people’s memories into one unattributed statement.
• Deleting email or messages because a screenshot was saved.
• Resetting an old phone or computer that may contain relevant files.
• Removing suspected asbestos material to use as evidence.
• Assuming a document proves more than it actually shows.
• Waiting until a witness becomes difficult to locate before saving contact information.

✅ Family Evidence Preservation Checklist

• Create an inventory of important documents and objects.
• Preserve pathology, diagnosis and treatment records.
• Save employment, union, pension and military records when relevant.
• Build a chronological work and exposure timeline.
• Keep original photographs, letters and paper documents.
• Preserve original digital files and metadata when available.
• Record product and equipment clues without guessing.
• Save coworker and witness contact information.
• Record where every important item came from.
• Make backup copies without replacing originals.
• Keep edited copies separate from originals.
• Preserve prior lawsuit, trust and settlement documents.
• Do not collect suspected asbestos material yourself.
• Review preservation duties promptly if litigation is reasonably anticipated.

❓ Frequently Asked Questions

What evidence should a family save first?

Prioritize irreplaceable originals: pathology and diagnosis records, employment papers, photographs, military or union records, product documents, witness information and prior legal or trust files.

Should we scan old employment records?

Yes, digitization can create useful preservation copies, but keep the originals when practical. The National Archives specifically advises retaining originals after digitization.

Can we write names and dates on old photographs?

It is generally safer to record that information in a separate inventory so the original is not altered.

Is a screenshot enough to preserve digital evidence?

Not always. A screenshot may omit metadata, surrounding context or attachments. Preserve the original file, message or export when possible.

Should we record memories before a lawsuit is filed?

It can be useful to preserve firsthand recollections and identify who made the note and when. Keep uncertainty intact rather than filling gaps with assumptions.

Does preserving evidence mean it will be admissible in court?

No. Preservation, authentication, relevance, hearsay and other evidentiary requirements are separate questions.

Should we keep duplicate records?

At least until they are reviewed. Apparent duplicates may contain different handwriting, envelopes, dates or source information.

Can we save a piece of old insulation as evidence?

Do not disturb or collect suspected asbestos material yourself. Preserve photographs, location information and records and use qualified professionals when inspection or sampling is appropriate.

What if an employer or job site no longer exists?

Preserve what the family has. Union records, government archives, successor companies, former coworkers, historical facility records and other sources may later help reconstruct the history.

Why does it matter where a document came from?

Provenance can help establish authenticity and explain the context of an item. Rule 901 generally requires sufficient evidence that an item is what it is claimed to be.

What if we already edited or cropped an old photo?

Keep the edited version, but locate and preserve the unedited original if possible. Label which version was changed and what was done.

When should we ask about a formal preservation obligation?

If litigation is pending or reasonably anticipated, obtain case-specific guidance promptly. Federal Rule 37(e), for example, addresses reasonable preservation of electronically stored information in federal litigation.

📞 Request a Case Evaluation

If your family is preserving records after a mesothelioma diagnosis, start with the materials that are hardest to replace: original medical records, work documents, photographs, military or union records, witness information and prior claim documents. Keep originals safe and create an inventory showing where each item came from.

Call 800.291.0963 for a no-obligation case evaluation. Talk to a real person 24/7, 365 days a year. There are no out-of-pocket legal fees for a contingency-fee claim unless compensation is recovered. Submit your case here.