diff --git a/src/Famix-OpenTelemetry-Importer/OTelSTONFileExtractor.class.st b/src/Famix-OpenTelemetry-Importer/OTelSTONFileExtractor.class.st
new file mode 100644
index 0000000..618c612
--- /dev/null
+++ b/src/Famix-OpenTelemetry-Importer/OTelSTONFileExtractor.class.st
@@ -0,0 +1,26 @@
+Class {
+	#name : #OTelSTONFileExtractor,
+	#superclass : #OTelAbstractExtractor,
+	#instVars : [
+		'filename'
+	],
+	#category : #'Famix-OpenTelemetry-Importer'
+}
+
+{ #category : #extraction }
+OTelSTONFileExtractor >> extract [
+
+	^ (STONReader on: filename asFileReference readStream) next
+]
+
+{ #category : #accessing }
+OTelSTONFileExtractor >> filename [
+
+	^ filename
+]
+
+{ #category : #accessing }
+OTelSTONFileExtractor >> filename: anObject [
+
+	filename := anObject
+]
diff --git a/src/Famix-OpenTelemetry-Importer/OTelSTONFileLoader.class.st b/src/Famix-OpenTelemetry-Importer/OTelSTONFileLoader.class.st
new file mode 100644
index 0000000..e4e4384
--- /dev/null
+++ b/src/Famix-OpenTelemetry-Importer/OTelSTONFileLoader.class.st
@@ -0,0 +1,25 @@
+Class {
+	#name : #OTelSTONFileLoader,
+	#superclass : #OTelAbstractLoader,
+	#category : #'Famix-OpenTelemetry-Importer'
+}
+
+{ #category : #loading }
+OTelSTONFileLoader >> load: rawTraces [
+
+	rawTraces do: [ :rawSpan |
+		| span |
+		span := self loadSpan: rawSpan ].
+	^ self model
+]
+
+{ #category : #'private - loading' }
+OTelSTONFileLoader >> loadSpan: anOTSpan [
+
+	^ self model newSpan
+		  id: anOTSpan spanId;
+		  name: anOTSpan name;
+		  tags: anOTSpan attributes;
+		  timestamp: anOTSpan startTime;
+		  duration: anOTSpan endTime - anOTSpan startTime
+]