diff --git a/data-tool/Makefile b/data-tool/Makefile
index e809d7835d..1e8754878c 100644
--- a/data-tool/Makefile
+++ b/data-tool/Makefile
@@ -112,7 +112,15 @@ run-tombstone-verify: ## Run corp tombstone verify flow
 run-colin-freeze:  ## Run colin freeze flow
 	. $(VENV_DIR)/bin/activate && \
 	python flows/colin_freeze_flow.py
+OUT ?=
+RESET_EXTRACT_POSTGRES ?=
+run-extract-load:
+	. $(VENV_DIR)/bin/activate && \
+	python flows/refresh_extract_subset_flow.py "$(CORP_FILE)" $(if $(strip $(OUT)), --out "$(OUT)",) --run-dbschemacli --dbschemacli-cmd "$${DBSCHEMACLI_CMD:-dbschemacli}"
 
+run-extract-refresh:
+	. $(VENV_DIR)/bin/activate && \
+	python flows/refresh_extract_subset_flow.py "$(CORP_FILE)" --mode refresh --run-dbschemacli --dbschemacli-cmd "$${DBSCHEMACLI_CMD:-dbschemacli}"
 
 #################################################################################
 # Self Documenting Commands                                                     #
diff --git a/data-tool/flows/refresh_extract_subset_flow.py b/data-tool/flows/refresh_extract_subset_flow.py
new file mode 100644
index 0000000000..737ccf3dec
--- /dev/null
+++ b/data-tool/flows/refresh_extract_subset_flow.py
@@ -0,0 +1,177 @@
+import argparse
+import os
+from pathlib import Path
+import re
+import subprocess
+import sys
+from prefect import flow, task
+from prefect.cache_policies import NO_CACHE
+from prefect.states import Failed
+from flask import current_app
+from config import get_named_config
+_REPO_ROOT = Path(__file__).resolve().parents[2]
+_SCRIPT_PATH = _REPO_ROOT / 'data-tool' / 'scripts' / 'generate_cprd_subset_extract.py'
+_GENERATED_DIR = _REPO_ROOT / 'data-tool' / 'scripts' / 'generated'
+_DEFAULT_DDL = _REPO_ROOT / 'data-tool' / 'scripts' / 'colin_corps_extract_postgres_ddl'
+_SUBSET = _GENERATED_DIR / 'subset_refresh.sql'
+
+def _resolve_master_script_path(out: str | None) -> Path:
+    if out:
+        return Path(out).expanduser().resolve()
+    return _SUBSET.resolve()
+
+def _run_cmd(argv: list[str], env: dict[str, str] | None = None) -> None:
+    r = subprocess.run(argv, cwd=str(_REPO_ROOT), capture_output=False, text=True, env=env)
+    if r.returncode != 0:
+        raise RuntimeError(f'command failed ({r.returncode}): {" ".join(argv)}')
+    
+def require_file(path: str | Path, description: str) -> Path:
+    """File Not Found Error"""
+    resolved = Path(path).expanduser().resolve()
+    if not resolved.is_file():
+        raise FileNotFoundError(f'{description} not found (expected a file): {resolved}')
+    return resolved
+
+
+def _reset_extract_postgres_db() -> None:
+    cfg = get_named_config()
+    dbname = cfg.DB_NAME_COLIN_MIGR
+    host = cfg.DB_HOST_COLIN_MIGR
+    port = str(cfg.DB_PORT_COLIN_MIGR)
+    user = cfg.DB_USER_COLIN_MIGR
+    password = cfg.DB_PASSWORD_COLIN_MIGR
+    
+    require_file(_DEFAULT_DDL, 'Extract DDL File')
+
+    pg_flags = ['-h', host, '-p', str(port), '-U', user]
+    run_env = dict(os.environ)
+    if password and 'PGPASSWORD' not in run_env:
+        run_env['PGPASSWORD'] = password
+    safe_db = str(dbname).replace("'", "''")
+    terminate_sql = (
+        "SELECT pg_terminate_backend(pg_stat_activity.pid) "
+        "FROM pg_stat_activity "
+        f"WHERE datname = '{safe_db}' AND pid <> pg_backend_pid();"
+    )
+    _run_cmd(['psql', *pg_flags, '-d', 'postgres', '-c', terminate_sql ], env=run_env)
+    _run_cmd(['dropdb', *pg_flags, '--maintenance-db=postgres', '--if-exists', dbname ], env=run_env)
+    _run_cmd(['createdb', *pg_flags, '--maintenance-db=postgres', '-T', 'template0', dbname ], env=run_env)
+    _run_cmd(['psql', *pg_flags, '-d', dbname, '-v', 'ON_ERROR_STOP=1', '-f', str(_DEFAULT_DDL) ], env=run_env)
+
+@task(name='Cleanup-Extract-Postgres', cache_policy=NO_CACHE)
+def cleanup_extract_postgres_db() -> None:
+    _reset_extract_postgres_db()
+
+@task(name='Run-CPRD-Subset-Generator', cache_policy=NO_CACHE)
+def run_cprd_subset_extract_generator(
+    corp_file: str,
+    mode: str,
+    chunk_size: int,
+    threads: int,
+    pg_fastload: bool,
+    pg_disable_method: str,
+    out: str | None
+) -> subprocess.CompletedProcess:
+    """
+    Generate Commands
+    """
+    require_file(_SCRIPT_PATH, 'Generated script')
+    corp_path =require_file(corp_file, 'Corp list file')
+    
+    argv = [
+        sys.executable,
+        str(_SCRIPT_PATH),
+        '--corp-file',
+        str(corp_path),
+        '--mode',
+        mode,
+        '--chunk-size',
+        str(chunk_size),
+        '--threads',
+        str(threads),
+        '--pg-disable-method',
+        pg_disable_method,
+    ]
+    if pg_fastload:
+        argv.append('--pg-fastload')
+    out_path = Path(out).expanduser().resolve() if out is not None else _SUBSET.resolve()
+    out_path.parent.mkdir(parents=True, exist_ok=True)
+    argv.extend(['--out', str(out)])
+    
+    return subprocess.run(
+        argv,
+        cwd=str(_REPO_ROOT),
+        capture_output=False,
+        text=True,
+    )
+
+@task(name='DBSchemaCLI', cache_policy=NO_CACHE)
+def run_dbschemacli_task(master_script: str, dbschemacli_cmd: str = 'dbschemacli') -> subprocess.CompletedProcess:
+    master_script_path = Path(master_script)
+    if not master_script_path.exists():
+        raise FileNotFoundError(f'Generated script not found: {master_script_path}')
+    print(f'Running: {dbschemacli_cmd} {master_script_path}')
+    return subprocess.run(
+        [dbschemacli_cmd, str(master_script_path)],
+        cwd=str(_REPO_ROOT),
+        capture_output=False,
+        text=True,
+    )
+
+@flow(name='Extract-Subset-Flow', log_prints=True, persist_result=False)
+def extract_pull_flow(
+    corp_file: str,
+    mode: str = 'load',
+    chunk_size: int = 900,
+    threads: int = 4,
+    pg_fastload: bool = False,
+    pg_disable_method: str = 'replica_role',
+    out: str | None=None,
+    run_dbschemacli: bool = False,
+    dbschemacli_cmd: str = 'dbschemacli',
+    reset_extract_postgres: bool = True,
+) -> None:
+    """
+    Generate files
+    """
+    if reset_extract_postgres:
+        cleanup_extract_postgres_db()
+
+    print(f'Running CPRD subset extract generator {corp_file}')
+    result = run_cprd_subset_extract_generator(
+        corp_file=corp_file,
+        mode=mode,
+        chunk_size=chunk_size,
+        threads=threads,
+        pg_fastload=pg_fastload,
+        pg_disable_method=pg_disable_method,
+        out=out,
+    )
+    if result.returncode != 0:
+        raise RuntimeError(f'Generator exited with code {result.returncode}')
+    print(f'generator completed successfully')
+
+    if run_dbschemacli:
+        master_script = _resolve_master_script_path(out=out)
+        run_result = run_dbschemacli_task(
+            master_script=str(master_script),
+            dbschemacli_cmd=dbschemacli_cmd,
+        )
+        if run_result.returncode != 0:
+            raise RuntimeError(f'DbSchemaCLI exited with code {run_result.returncode}')
+
+    
+
+if __name__ == '__main__':
+    p = argparse.ArgumentParser(description='Run Extract-Pull flow....')
+    p.add_argument('corp_file', help='Path to newline-delimited corp identifiers')
+    p.add_argument('--mode', default='load', choices=('refresh', 'load'))
+    p.add_argument('--chunk-size', type=int, default=900, help='Max items per IN list.')
+    p.add_argument('--threads', type=int, default=4, help='DBSchemaCLI transfer threads')
+    p.add_argument('--pg-fastload', action='store_true', help='Enable Postgres fast-load')
+    p.add_argument('--pg-disable-method', default='replica_role', choices=('table_triggers', 'replica_role'))
+    p.add_argument('--out', default=None, help='Output path for generated master script.')
+    p.add_argument('--run-dbschemacli', action='store_true')
+    p.add_argument('--dbschemacli-cmd', default='dbschemacli')
+    p.add_argument('--reset-extract-postgres', action='store_false')
+    extract_pull_flow(**vars(p.parse_args()))
\ No newline at end of file