This subtopic covers the essential principles and practical techniques for safeguarding archaeological items from deterioration through controlled environm
Topic Synopsis
This subtopic covers the essential principles and practical techniques for safeguarding archaeological items from deterioration through controlled environmental conditions, regular monitoring, and proactive protective measures. Learners will gain competence in assessing risks, establishing preservation protocols, and implementing appropriate storage and handling procedures to maintain the integrity and longevity of artefacts, ecofacts, or structural remains. Mastery of these preventative care procedures is critical to ensuring the evidential and historical value of items is preserved for future research and public interpretation.
Key Concepts & Core Principles
- Stratigraphy and the Law of Superposition: Understanding how layers of soil and artifacts build up over time, and using this to establish chronological sequences.
- Excavation techniques: Including open-area excavation, test pitting, and section drawing, with emphasis on maintaining context integrity.
- Finds processing and conservation: Proper handling, cleaning, labeling, and storage of artifacts, as well as basic conservation principles to prevent deterioration.
- Site surveying and recording: Using equipment like dumpy levels, total stations, and GPS to create accurate plans and sections, and maintaining a site diary.
- Health and safety in archaeology: Risk assessments, COSHH regulations, and safe use of tools and machinery on site.
Exam Tips & Revision Strategies
- When preparing evidence, include annotated photographs, data logs, and signed witness statements to demonstrate consistent monitoring practice over time.
- In assignments, always reference recognised conservation standards (e.g., BS 4971 for archival storage, relevant CIfA guidelines) to show professional awareness.
- For the framework development task, clearly differentiate between preventive and interventive conservation, focusing on the former as per the unit.
- Practice writing risk assessments for commonly encountered materials (iron, wood, textiles) to streamline assessment tasks.
Common Misconceptions & Mistakes to Avoid
- Students often overlook the importance of recording baseline environmental data before implementing control measures, leading to inability to assess changes over time.
- A common error is applying generic storage solutions without considering the specific material vulnerabilities of different archaeological finds (e.g., treating dry bone like ceramics).
- Candidates may focus only on immediate visible damage while neglecting slow accumulative deterioration such as corrosion from off-gassing storage materials.
- Mistaking passive monitoring for active control; failing to intervene when environmental readings are outside safe thresholds.
Examiner Marking Points
- Award credit for demonstrating the ability to accurately measure and record environmental parameters such as temperature, relative humidity, and light levels using calibrated monitoring equipment.
- Credit should be given when the candidate identifies specific risks to an item based on its material composition and proposes suitable environmental control measures (e.g., silica gel for metals, acid-free packaging for organics).
- Evidence must show that the candidate has successfully developed a written preservation framework, including clear protocols for monitoring frequency, acceptable parameter ranges, and escalation procedures for out-of-specification readings.
- For application methods, assessors should look for proper handling techniques, selection of inert storage materials, and correct use of protective enclosures or supports.