diff --git a/dfhack/include/modules/Creatures.h b/dfhack/include/modules/Creatures.h
index 5a2c0c618..77f341e56 100644
--- a/dfhack/include/modules/Creatures.h
+++ b/dfhack/include/modules/Creatures.h
@@ -265,6 +265,7 @@ namespace DFHack
         int16_t typeA;
         int16_t typeB;
         int16_t typeC;
+	uint32_t flags;
     };
     struct t_job
     {
diff --git a/dfhack/modules/Creatures.cpp b/dfhack/modules/Creatures.cpp
index ae2ad2557..0b92113b6 100644
--- a/dfhack/modules/Creatures.cpp
+++ b/dfhack/modules/Creatures.cpp
@@ -375,6 +375,7 @@ bool Creatures::ReadJob(const t_creature * furball, vector<t_material> & mat)
         mat[i].typeA = p->readWord(cmats[i] + minfo->getOffset("job_material_maintype"));
         mat[i].typeB = p->readWord(cmats[i] + minfo->getOffset("job_material_sectype1"));
         mat[i].typeC = p->readWord(cmats[i] + minfo->getOffset("job_material_sectype2"));
+        mat[i].flags = p->readWord(cmats[i] + minfo->getOffset("job_material_flags"));
     }
     return true;
 }
diff --git a/examples/creaturedump.cpp b/examples/creaturedump.cpp
index 2b64d035d..fa8fb6fcb 100644
--- a/examples/creaturedump.cpp
+++ b/examples/creaturedump.cpp
@@ -276,11 +276,14 @@ void printCreature(DFHack::API & DF, const DFHack::t_creature & creature)
 					case 57:
 						maintype = (char*)"cloth";
 						break;
+					case -1:
+						maintype = (char*)"bones/shell";
+						break;
 					default:
 						maintype = (char*)"????";
 						break;
 				}
-				printf("\t%s\t%d %d\n", maintype, mat[i].typeB, mat[i].typeC);
+				printf("\t%s\t%d %d - %.8x\n", maintype, mat[i].typeB, mat[i].typeC, mat[i].flags);
 			}
 		}
 	}
diff --git a/output/Memory.xml b/output/Memory.xml
index 4f177bbab..e2079a315 100755
--- a/output/Memory.xml
+++ b/output/Memory.xml
@@ -1429,6 +1429,7 @@ map_data_1b60_offset          0x1B9c
 	<Offset name="job_material_maintype">0x0</Offset> like mood materials, 0=bars, 4=stone, 5=wood, 57=cloth, 54=leather ...
 	<Offset name="job_material_sectype1">0x2</Offset> always -1
 	<Offset name="job_material_sectype2">0x4</Offset> subtype ?
+	<Offset name="job_material_flags">0x18</Offset> set only for shell / bone mood requirements ?
         
         Materials
         =========