diff --git a/NEWS.md b/NEWS.md
index 6acbdaa..4e1a6b1 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -12,6 +12,8 @@ which always resolves to the latest release.
     - GrossNet
     - IndustryAggregation
     - ProductAggregation
+    - ChoppedMat
+    - ChoppedVar
 
 
 # PFUPipelineTools 0.1.12 (2024-12-09) [![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.14589472.svg)](https://doi.org/10.5281/zenodo.14589472)
diff --git a/R/retrieving.R b/R/retrieving.R
index fb10f89..de5c2a5 100644
--- a/R/retrieving.R
+++ b/R/retrieving.R
@@ -213,6 +213,10 @@ pl_collect_from_hash <- function(hashed_table,
 #' @param product_aggs A vector of strings identifying the product aggregations desired.
 #'                     `NULL` (the default) means all product aggregations should be returned.
 #'                     Other reasonable values are "Specified", "Despecified", and "Grouped".
+#' @param chopped_mats A vector of strings identifying the matrix chops desired.
+#'                     `NULL` (the default) means all chopped matrices should be returned.
+#' @param chopped_vars A vector of strings identifying the matrix variables desired.
+#'                     `NULL` (the default) means all chopped variables should be returned.
 #' @param collect A boolean that tells whether to download the result.
 #'                Default is `FALSE`.
 #'                See details.
@@ -241,7 +245,7 @@ pl_collect_from_hash <- function(hashed_table,
 #'               Default is "matval".
 #' @param rowtype_colname,coltype_colname The names for row and column type columns in data frames.
 #'                                        Defaults are "rowtype" and "coltype", respectively.
-#' @param dataset_colname,country_colname,year_colname,method_colname,last_stage_colname,energy_type_colname,gross_net_colname,product_agg_colname,industry_agg_colname Columns that are likely to be in db_table_name
+#' @param dataset_colname,country_colname,year_colname,method_colname,last_stage_colname,energy_type_colname,gross_net_colname,product_agg_colname,industry_agg_colname,chopped_mat_colname,chopped_var_colname Columns that are likely to be in db_table_name
 #'                                                                             and may be filtered with `%in%`-style subsetting.
 #' @param includes_neu_col The name of a column that tells whether non-energy
 #'                         use (NEU) is included.
@@ -263,6 +267,8 @@ pl_filter_collect <- function(db_table_name,
                               includes_neu = TRUE,
                               industry_aggs = NULL,
                               product_aggs = NULL,
+                              chopped_mats = NULL,
+                              chopped_vars = NULL,
                               collect = FALSE,
                               conn,
                               schema = schema_from_conn(conn = conn),
@@ -289,7 +295,9 @@ pl_filter_collect <- function(db_table_name,
                               dataset_colname = PFUPipelineTools::dataset_info$dataset_colname,
                               includes_neu_colname = Recca::psut_cols$includes_neu,
                               product_agg_colname = PFUPipelineTools::aggregation_df_cols$product_aggregation,
-                              industry_agg_colname =  PFUPipelineTools::aggregation_df_cols$industry_aggregation) {
+                              industry_agg_colname =  PFUPipelineTools::aggregation_df_cols$industry_aggregation,
+                              chopped_mat_colname = PFUPipelineTools::aggregation_df_cols$chopped_mat,
+                              chopped_var_colname = PFUPipelineTools::aggregation_df_cols$chopped_var) {
 
   matrix_class <- match.arg(matrix_class)
 
@@ -355,6 +363,16 @@ pl_filter_collect <- function(db_table_name,
     out <- out |>
       dplyr::filter(.data[[product_agg_colname]] %in% prodaggs)
   }
+  if (!is.null(chopped_mats) & chopped_mat_colname %in% cnames) {
+    chopped_mats <- unlist(chopped_mats)
+    out <- out |>
+      dplyr::filter(.data[[chopped_mat_colname]] %in% chopped_mats)
+  }
+  if (!is.null(chopped_vars) & chopped_var_colname %in% cnames) {
+    chopped_vars <- unlist(chopped_vars)
+    out <- out |>
+      dplyr::filter(.data[[chopped_var_colname]] %in% chopped_vars)
+  }
 
   if (collect) {
     # Collect (execute the SQL), if desired.
diff --git a/man/pl_filter_collect.Rd b/man/pl_filter_collect.Rd
index a9e2b3b..97880ef 100644
--- a/man/pl_filter_collect.Rd
+++ b/man/pl_filter_collect.Rd
@@ -16,6 +16,8 @@ pl_filter_collect(
   includes_neu = TRUE,
   industry_aggs = NULL,
   product_aggs = NULL,
+  chopped_mats = NULL,
+  chopped_vars = NULL,
   collect = FALSE,
   conn,
   schema = schema_from_conn(conn = conn),
@@ -39,7 +41,9 @@ pl_filter_collect(
   dataset_colname = PFUPipelineTools::dataset_info$dataset_colname,
   includes_neu_colname = Recca::psut_cols$includes_neu,
   product_agg_colname = PFUPipelineTools::aggregation_df_cols$product_aggregation,
-  industry_agg_colname = PFUPipelineTools::aggregation_df_cols$industry_aggregation
+  industry_agg_colname = PFUPipelineTools::aggregation_df_cols$industry_aggregation,
+  chopped_mat_colname = PFUPipelineTools::aggregation_df_cols$chopped_mat,
+  chopped_var_colname = PFUPipelineTools::aggregation_df_cols$chopped_var
 )
 }
 \arguments{
@@ -87,6 +91,12 @@ Other reasonable values are "Specified", "Despecified", and "Grouped".}
 \code{NULL} (the default) means all product aggregations should be returned.
 Other reasonable values are "Specified", "Despecified", and "Grouped".}
 
+\item{chopped_mats}{A vector of strings identifying the matrix chops desired.
+\code{NULL} (the default) means all chopped matrices should be returned.}
+
+\item{chopped_vars}{A vector of strings identifying the matrix variables desired.
+\code{NULL} (the default) means all chopped variables should be returned.}
+
 \item{collect}{A boolean that tells whether to download the result.
 Default is \code{FALSE}.
 See details.}
@@ -127,7 +137,7 @@ Default is "matval".}
 \item{rowtype_colname, coltype_colname}{The names for row and column type columns in data frames.
 Defaults are "rowtype" and "coltype", respectively.}
 
-\item{dataset_colname, country_colname, year_colname, method_colname, last_stage_colname, energy_type_colname, gross_net_colname, product_agg_colname, industry_agg_colname}{Columns that are likely to be in db_table_name
+\item{dataset_colname, country_colname, year_colname, method_colname, last_stage_colname, energy_type_colname, gross_net_colname, product_agg_colname, industry_agg_colname, chopped_mat_colname, chopped_var_colname}{Columns that are likely to be in db_table_name
 and may be filtered with \code{\%in\%}-style subsetting.}
 
 \item{includes_neu_col}{The name of a column that tells whether non-energy